Hello good morning, Hello good morning, and or Good afternoon wherever you are. and or Good afternoon wherever you are. I'm buttered easy and and I welcome I'm buttered easy and and I welcome you for this first single of you for this first sink of this this year start see we are also. year start sick we are also. At the same time, At the same time, we're also using a new system on 24 we're also using a new system on 24 that you are discovering so I hope that you are discovering so I hope you will appreciate this new system. you will appreciate this new system. Uh the the topic that we, we, Uh the the topic that we, we, we decided to to cover today we decided to to cover today is time history analysis. is time history analysis. We had several questions on this. We had several questions on this. Topic so we try to bring you uh Topic so will try to bring you uh as much information as possible. as much information as possible. Be aware that in the system. Be aware that in the system. You have in Q&A and you probably have You have in Q&A and you probably have seen that in the present in the in the? seen that in the present in the in the? Uh in the first slide so you have the Uh in the first slide so you have the opportunity to ask questions my colleagues. opportunity to ask questions my colleagues. I have 3 colleagues. I have 3 colleagues. Join in They are here to answer your Join in They are here to answer your question it's recorded so if you question it's recorded so if you need to review or to watch this. need to review or to watch this. This presentation later you will This presentation later you will need to use the same link. need to use the same link. And it'll take you back to this uh page. And it'll take you back to this uh page. But you will see the recording and But you will see the recording and you will still have the opportunity you will still have the opportunity to ask questions. to ask questions. Which will be emailed to us and Email it to us and we can answer even we can answer even after this after this session is closed OK so. session is closed OK so? Time history analysis. Time history analysis. Before we go further just a reminder Before we go further just a reminder we're using start pro connect edition. we're using start pro connect edition. So everything you're going to see today So everything you're going to see today is based on this version if you are is based on this version if you are still using the older the old version, still using the older the old version, V8I. V8I. And their principles will be the same, The principles will be the same, the interface will change, the interface will change, but the principles will be but the principles will be the the same there are some. same there are some. Additional features in the Kinect Additional features in the Kinect edition and I think you need to, edition and I think you need to, you need to check those you need to check those those new capabilities and. those new capabilities and. Give a try to disconnect edition. Give a try to disconnect edition. So OK, so our presentation is split in 2 So OK, so our presentation is split in 2 parts into 2 parts so the first one, is just. parts into 2 parts so the first one, is just. To refresh the memories about time To refresh the memories about time history analysis and time varying loads. history analysis and time very loads. And how this is implemented in Star pro. And how this is implemented and start pro. And the 2nd part will be a set of 3 examples. And the 2nd part will be a set of 3 examples. So time history analysis. So time history analysis. In fact, let's start by what requires us In fact, let's start by what requires us to perform a time history analysis so. to perform a time history analysis so. The response of a structure. The response of a structure. Will vary with time if the direction Will vary with time if the direction or the intensity of the applied load or the intensity of the applied load varies with time generally we have? varies with time generally we have? Or most of the time we We deal with Or most of the time we We deal with the with the static load static the with the static load static means there are they do not change. means there are they do not change. Neither entire neither in intensity nor Neither entire neither in intensity in orange? In direction, but in some other cases. in direction. But in some other cases. We have to face this situation We have to face this situation and in the real life, we can. in the real life, we can. Well, we can mention blast Well, we can mention blast effects rotating equipment, effects rotating equipment, human induced vibration water human induced vibration water hammering supported pipes ground hammering supported pipes ground movements all these cases. movements all these cases. May require a time history analysis. May require a time history analysis. So I say may require not say it always So I say may require not say it always requires becaus time history analysis, requires becaus time history analysis, although it is the best although it is best analysis because it's very. analysis because it's very. Very detailed very complete, Very detailed very complete, but It's time consuming it requires a? but It's time consuming it requires a? It requires uh uh. It requires uh uh. Powerful computers, Powerful computers, it requires also it requires also and this is the and this is the most important prerequisite. most important prerequisite. It requires that the user know accurately. It requires that the user know accurately. The applied load, The applied load, so if the applied load is not known so if the applied load is not known accurately so there is no way you can. accurately so there is no way you can. A correct time history analysis. A correct time history analysis. Uh so. This analysis is based on the Uh so. This analysis is based on the solution of the following equation. solution of the following equation. This is the equilibrium equation, This is the equilibrium equation, which is involving. which is involving. The applied force on the right side. The applied force on the right side. On on the left side is the On on the left side is the inertia force the damping force. inertia force the damping force. On the stiffness force. On the stiffness force. OK uh in general, OK, in general, this solution is solved using this solution is solved using what we call direct integration. what we call direct integration. It means that we integrate directly this. It means that we integrate directly this. Uh this equation step by step This equation step by step over the over the over the duration of the over the duration of the application application of the low down even. of the low down even beyond. Beyond the end of the application The end of the application of the of the load and this is the most load and this is the most general general case in the most general case. case in the most general case. Also, we can consider that the mattress is. Also, we can consider that the matrices. OK, or C or M are changing. OK, or C or M are changing. But in start proving its actual version, But in start proving its actual version, we have implemented only the we have implemented only the linear approach at this time. linear approach at this time. In which case those matrices are In which case those matrices are constant and we suppose that the constant and we suppose that the displacements are small are also another. displacements are small are also another. Another uh another matter of fact is that? Another another matter of fact is that? You cannot use if you are using You cannot use if you are using time history analysis, you cannot. time history analysis, you cannot. I use attention members Use attention members compression compression members or any any. members or any any. Go or or support so those all Or or or support so those all those types of element cannot be those types of element cannot be used so attention member will be. used so attention member will be. Converted automatically in a trusted so Converted automatically in a trusted so it will take tension and compression. it will take tension and compression. At the same time, OK becaus the At the same time, OK becaus the analysis is based on a linear approach. analysis is based on a linear approach. So and also be cause. So and also be cause. It's based on a linear approach, It's based on a linear approach, then we do not need to solve we have another. then we do not need to solve we have another. Methods to solve this, Methods to solve this, this solution and this is the this solution and this is the method implemented in Star pro. method implemented in Star pro. It's called the model super It's called the model super position. position and this is due to the And this is due to the fact fact that the first equation. that the first equation. Can be transformed? Can be transformed? Uh in the last equation that you Uh in the last equation that you see at the bottom of the slide. see at the bottom of the slide. Uh so common going from a general equation, Uh so come and go in from a general equation, we end up with a set of peace separate we end up with a set of peace. Separate equations PB in the number of. equations BB in the number of. Of of modes. Of of modes. And uh we, And uh we, we uncouple those equations and we we uncouple those equations and we can solve this equation mode by mode, can solve this equation mode by mode, so we We we take one mode and then we so we We we take one mode and then we will solve it step by step overtime. will solve it step by step overtime. But we do not have to solve. But we do not have to solve. Like we do in a direct integration Like we do in a direct integration the whole displacement, the whole displacement, so we will just consider mode by mode. so we will just consider mode by mode. And uh when you compare this And uh when you compare this method to the more general direct method to the more general direct direct integration method. direct integration method. It's much faster, especially when you It's much faster, especially when you have to deal with large linear system. have to deal with large linear system. But the set back of this method But the set back of this method is that since it's based on model is that since it's based on model super position is that you. super position is that you. Often, or sometimes you will need to go Often, or sometimes you will need to go very far and the number of modes, too, very far and the number of modes, too, which contribution has to be have to be. which contribution has to be have to be. Considered so if you are for example, Considered so if you are for example, dealing with systems where the dominant dealing with systems where the dominant modes are in the high range of frequencies. modes are in the high range of frequencies. Then you will need to extract not only the Then you will need to extract not only the first first frequencies as we are used to. first first frequencies as we are used to. When we did with the Civil Engineering. When we did with the Civil Engineering. For example, with the building. For example, with the building. We generally go up to 33 Hertz. We generally go up to 33 Hertz. But in other cases, But in other cases, you will have to go much more than you will have to go much more than 33 Hertz and we'll find out yourself. 33 Hertz and we'll find out yourself. Extracting a huge number of of moles Extracting a huge number of of moles and this is also time consuming. and this is also time consuming. But there are some options in Star product. But there are some options in Star product. We will see and this is what is what We will see and this is what is what is listed? The bottom of the slide. is listed? The bottom of the slide. So you can specify a number or you So you can specify a number or you can increase the number of modes. can increase the number of modes. The number of modes or you can The number of modes or you can also select which modes not. also select which modes not. Only the 10 first mode, Only the 10 first mode, but you can see you can say. but you can see you can say. I want the first third and 9th mode. I want the first third and 9th mode. And if you are in those are the only modes And if you are in those are the only modes that are significant for your in your case. that are significant for your in your case. The other option is to select an alternative. The other option is to select an alternative. Eigen solution method, Eigen solution method, which will not have to extract all which will not have to extract all the possible modes, but will. the possible modes, but will. Go directly to those. Go directly to those. Uh important mode. Uh important mode. And uh another method is when you And uh another method is when you have extracted enough modes than have extracted enough modes than there are still existing modes, there are still existing modes, but maybe they are not that significant. but maybe they are not that significant. Then you can. Then you can. You can complete the response of You can complete the response of your system by triggering the your system by triggering the missing mass correction, missing mass correction, so these are the 3 options available in. so these are the 3 options available in. Start pro and we will see those in practice. Start pro and we will see those in practice. So now. So now. Talking about practice how do Talking about practice how do we instruct star pro to run? we instruct star pro to run? A Time History Analysis? A Time History Analysis? In fact there is no such? In fact there is no such? Type of analysis, we have perform analysis, Type of analysis, we have perform analysis, P Delta. P Delta. But we don't have time history analysis. But we don't have time history analysis. We have to run a perform an alesis, which is? We have to run a perform an alesis, which is? Based on a linear approach. Based on a linear approach. It's the load that is varying with time, It's the load that is varying with time, so everything will happen in the load. so everything will happen in the load. Chapter. So how do we do that? Chapter. So how do we do that? It's a 2 step process? It's a 2 step process. First, the user will need to. First, the user will need to? Define the time history or created Define the time history or created time history definition and this is. time history definition and this is. Shown here in this first picture. Shown here in this first picture. So, So, in the definitions when you are in the definitions when you are in the load in the load page. in the load in the load page. So you have definitions you need So you have definitions you need to define the time history, to define the time history, so how do we define it we define it? so how do we define it we define it? Through those 2 dialog boxes we define first, Through those 2. Dialog boxes we define first, the time history or the load profile the time history or the load profile itself and then we have to define. itself and then we have to define. Additional parameters for the solution, Additional parameters for the solution, but before we go to this stage we of but before we go to this stage we of course since it's dynamic analysis, course since it's dynamic analysis, the user will need to. the user will need to. Create the model for sure, but he will Create the model for sure, but he will also need to define the masses accurately. also need to define the masses accurately. And there is one slide to show you how And there is one slide to show you how to do that, and why we need to do that. to do that, and why we need to do that. Then we define the load profile versus Then we define the load profile versus time and the analysis parameters, time and the analysis parameters, so after the definition is complete. so after the definition is complete. Then we can use this definition. Then we can use this definition. To create a load case because the software, To create a load case because the software, or a star probe will analyze the load case, or a star probe will analyze the load case, the load that is specified. the load that is specified. So, in a load case you will call or you So, in a load case you will call or you will invoke the definition that you will invoke the definition that you have predefined and you will apply it. have predefined honey will apply it. Either on nodes or as a ground motion. Either on nodes or as a ground motion. It means all the supports will will It means all the supports will will receive this accelleration for example. receive this accelleration for example. OK so we will detail those those OK so we will detail those those 2 dialog boxes. 2 dialog boxes. So the first dialog box is the one So the first dialog box is the one where we define the load profile where we define the load profile and we can see here that. and we can see here that. There is the first option is a time step There is the first option is a time step so as I told you we, so as I told you we uh we solve the equation. we solve the equation. Step by step for one for each mode Step by step for one for each mode and then we super pose the result. and then we super pose the result. But for one mode for example. But for one mode for example. We will solve the? We will solve the? Uh the The equation by going a step by step, Uh the The equation by going a step by step, so the smaller the step is the better, so the smaller the step is the better, but also the smaller it means more. but also the smaller we means more equations or more. Equations or more more calculations More calculations to be involved, to be involved, so it means longer time for so it means longer time for the analysis, so there is a. the analysis so there is. The default is generally good as The default is generally good as you can see maybe it's clear there. you can see maybe it's clear there. It's one one thousandth of a second which is. It's it's one one thousandth of a second which is. Quite quite low. Quite quite low. And uh otherwise it is advised to And uh otherwise it is advised to not exceed 110th of the smallest. not exceed 110th of the smallest. . Used in this analysis? . Used in this analysis? Why do we mean by smaller spirit Why do we mean by smaller spirit as I told you? as I told you? We have in the response of a structure. We have in the response of a structure. We will need to consider all those We will need to consider all those modes that are contributing to the modes that are contributing to the response of other structure so. response of other structure so. If let's say I'm using the the If let's say I'm using the the 100 the first modes, 100 the first modes, then the first frequency. then the first frequency. The first frequency is the smallest the The first frequency is the smallest the last frequency is the highest so the last frequency is the highest so the highest frequency means small periods. highest frequency means small periods. So we will go and take the highest frequency. So we will go and take the highest frequency. And we will see the period of And we will see the period of this of this mode, this of this mode, which is the inverse of which is the inverse of the the frequency and then the. frequency and then the. Time step should not exceed. Time step should not exceed. This at least the this uh this uh period, This at least the this uh this uh period, but it ideally it should be 110th of this. but it ideally it should be 110th of this. Period. The good thing in Star Pro is that? Good. The good thing in Star Pro is that? If you do not set correctly. If you do not set correctly. This parameter start will let you This parameter start will let you know appan analyzing your file know appan analyzing your file it will tell you that there is. it will tell you that there is. A problem with one mode where the A problem with one mode where the timestamp is larger than the period timestamp is larger than the period of of that mode, then you will. of of that mode, then you will. You will be asked to correct that value. You will be asked to correct that value. OK, OK. Now we have also load type so now we have also load type so which which type of load are we going to apply type of load are we going to apply. it could be an acceleration like It could be an acceleration like a ground motion it could be. a ground motion it could be. A force or a moment so this is something to A force or a moment so this is something to be selected here right here. The profile, be selected here right here. The profile, So what shape will have this load. So what shape will have this load. So it could be of any shape so if we select So it could be of any shape so if we select the first option define time versus force. the first option define time versus force. Then we have a table here. Then we have a table here. We have a table. Uh in uh that appears We have a table. Uh in the that appears here and here and that will allow you to that will allow you to let you let you enter the pair of points. enter the pair of points. That time versus force. Time versus force. Otherwise, you can select harmonic function and Otherwise, you can select harmonic function and if you select harmonic function, then. if you select harmonic function, then. The the you will see what you what is The the you will see what you what is displayed on the screen right now, displayed on the screen right now, so you will see. so you will see. You will see that the program is expecting You will see that the program is expecting from you as it's a sign or cosine function? from you as it's a sign or cosine function? What frequency or do you want to enter? What frequency or do you want to enter? RPM round per minute and RPM round per minute and then the amplitude the phase. then the amplitude the phase. The phase in that case is 0 means at Time The phase in that case is 0 means at Time Zero assign is 0 and a cosine is equal 1. Zero assign is 0 and a cosine is equal 1. So the phase will determine if you So the phase will determine if you have if you're applying 2 or 3, have if you're applying 2 or 3, forces on a structure and then if they have. forces on a structure and then if they have. Different phase it means that Different phase it means that they will not act in phase so one. they will not act in phase so one. One will reach its maximum the other one. One will reach its maximum the other one. Maybe it's at the minimum. Maybe it's at the minimum. Or or at any other value depending Or or at any other value depending on the face value. on the face value. The cycles is the number of cycles The cycles is the number of cycles over which you want to analyze over which you want to analyze the effect of this load. the effect of this load. So you can see for example, So you can see for example, the frequency of the case that the frequency of the case that you see on the screen. Is? you see on the screen. Is? 12 around 12 cycles per seconds, 12 around 12 cycles per seconds, so and I'm specifying 30 cycles, so and I'm specifying 30 cycles, which means well, 30 / 12 it's about. which means well, 30 / 12 it's about. 2 1/2 seconds, 2 1/2 seconds, so it means we are going to analyze so it means we are going to analyze the behavior of the structure over 2. the behavior of the structure over 2. And 1/2 seconds well if you Seconds well if you consider the time step. consider the time step. Divide 2.5 seconds by the time step, Divide 2.5 seconds by the time step, it gives you some 2000 or 3000 steps. it gives you some 2000 or 3000 steps. I'm not sure but thousands of steps. I'm not sure but thousands of steps. And and uh. And and uh. Maybe it's enough so how many cycles do Maybe it's enough so how many cycles do we need to to select if you are running. we need to to select if you are running. A Harmonic If you are using A Harmonic If you are using a harmonic function, a harmonic function, while you need to select enough while you need to select enough to reach the steady state. to reach the steady state. Response so you know when Response so you know when you start applying the load. you start applying the load. Uh the first a response is Uh the first response is a transient response. a transient response. It means that the IT could be of any shape. It means that the IT could be of any shape so you could have So you could have the maximum the maximum happening. happening in the transient period, In the transient period, which is a short period before the structure. which is a short period before Starts a vibrating at the same the structure starts vibrating at the same frequency as the. frequency as the applied for so The applied for so this is this is the steady state part. the steady state part. So we need to apply enough to reach So we need to apply enough to reach the steady state when you see that the the steady state when you see that the vibration is constant at some point. vibration is constant at some point. Then you can say OK. It's enough. Then you can say OK. It's enough. I don't need to add more cycles I don't need to add more cycles because the more the cycles. because the more the cycles. And the higher the the analysis time. And the higher the the analysis time. OK. OK. The part that is shown here in The part that is shown here in blue is not blue is not covered in this in covered in this in this session, this session, it's only used. it's only used. When you want to perform an analysis When you want to perform an analysis called generate floor spectrum so called generate floor spectrum so I'm not covering it at this time. I'm not covering it at this time. Uh additional uh options, Uh additional options you have saved so you have saved so if you want if you want to save all the step by step. to save all the step by step. Results the displacements or the Results the displacements or the member member and forces so these are and forces so these are 2 two text files 2 two text files that could be that could be huge depending on the huge depending on the number of number of steps on the number of nodes. steps on the number of nodes. But they are useful if you want to go But they are useful if you want to go and and check in detail the behavior of a node. check in detail the behavior of a node. Or remember so you can just check save OK, Or remember so you can just check save OK, the last option is consider the last option is consider missing missing mass mode. mass mode. This is what I mentioned. This is what I mentioned. In an area slide so if you want to In an area slide so if you want to consider the missing master complete your. consider the missing master complete your. To go beyond the number of modes To go beyond the number of modes that you have selected maybe the that you have selected maybe the modes that you have selected are most that you have selected are representing only 90% of the response. representing only 90% of the response. You are missing steel 10%, You are missing steel 10%, so by clicking this button, so by clicking this button, you can get those 10% included in. you can get those 10% included in. In the response. OK. In the response. OK. Uh after the load profile the Uh after the load profile the user will have another chance to user will have another chance to specify or to modify the time step. specify or to modify the time step. Otherwise, the damping so in this Otherwise, the damping so in this example in the first example and example in the first example and this is what we see here I'm using. this is what we see here I'm using. 0 dumping so if you put 0. 0 damping so if you put 0. Automatically start with set it to 0.05, Automatically start with set it to 0.05, which is the default if you want to real 0. which is the default if you want to real 0. Then this is written here, Then this is written here, you need to enter this value. you need to enter this value. And then it will really be And then it will really be considered as zero damping by. considered as zero damping by. By the program so you have 3 types By the program so you have 3 types of damping will see them in another of damping will see them in another slide and the arrival time is. slide and the arrival time is. Is useful when you have multiple forces Is useful when you have multiple forces or the same force applied at different or the same force applied at different location in the structure but it's not. location in the structure but it's not. Action at the same moment sofa. Action at the same moment Let's suppose that one. so let's suppose that one. One wave load. One wave load. Let's say blast is heading Let's say a blast is heading. the first line of column. The first line of column at 0 At 0 seconds and then the same seconds and then the same wave wave or a different way visit in or a different way visit in the the second line of columns at 0.0, second line of columns at 0.0, one second later so you can do that. one second later so you can do that. By manipulating those arrival times. Manipulating those arrival times. Time history analysis input so uh Time history analysis input so uh once you have defined your load, once you have defined your load, then you will be in a position to. then you will be in a position to. Use that load in a load case so Use that load in a load case so you just go to the load cases. you just go to the load cases. You create your load case. You create your load case. An you specified time history on you. An you specified time history and you. Uh enter those. Uh enter those. Parameters so you need to tell Parameters so you need to tell the program if it's a time. the program if it's a time. Load means applied to nodes Load means applied to nodes we cannot apply it. we cannot apply it. Apply a pressure on a beam we at this moment, Apply a pressure on a beam we at this moment, we have only application. we have only application. On nodes or application as a ground motion, On nodes or application as a ground motion, which in this case is applied to the whole. which in this case is applied to the whole. To the whole support system? To the whole support system arrival time. Arrival time. Did you find type so this? The define type so this is the type the number. Is a type the number. The sequential number that you The sequential number that you have used that we have used have used that we have used in the definition of the load. in the definition of the load. The arrival time and the direction The arrival time and the direction and then you can use a factor to and then you can use a factor to amplify the force intensity OK. amplify the force intensity OK. So before of course I told you So before uh of course I told you earlier that there is there are some earlier that there is there are some prerequisite before we go further, though. prerequisite before we go further. You know it's based on model. You know it's based on model. Super position. Super position. Uh it based on the model shapes the And it's based on the model shapes the mode shapes and the mode frequencies. mode shapes and the mode frequencies. And therefore if those are the And therefore if those are the letters are not correct then all the letters are not correct then all the rest will be will be incorrect OK. rest will be will be incorrect OK. So we first need to carefully So we first need to carefully specify all the parameters that specify all the parameters that will influence the accuracy of your will influence the accuracy of your mode shapes or mold extraction. mode shapes or mold extraction. And those parameters are as we you remember, And then those parameters are as we you remember, we have always been we have always been shown this shown this simple model or in any. simple model in any dynamic course. Dynamic course. So it's a spring a Massana dumper, So it's a spring a Massana dumper, so and these are the parameters so and these are the parameters that will influence. that will influence. The The The The The response of The The The The The response of this little mass OK, this little mass OK, so we have 2. so we have 2. We have to care of these 3 parameters so. We have to care of these 3 parameters so. Stiffness is easy to do because Stiffness is easy to do because stiffness is what you would do in a stiffness is what you would do in a static analysis is a supporting system static analysis is the supporting system. and the links between the elements. On the links between the elements. And the rotation the orientation And the rotation the orientation of the element so many, many, of the element so many, many, many of those parameters, the masses. many of those parameters, the masses. So the mass is an important thing. So the mass is an important thing. But before we go to the Mass, But before we go to the Mass, the damping is is also an easy the damping is is also an easy once we are provided with. once we are provided with. A dumping value that you need A dumping value that you need to apply to apply but the mass what you by the mass what you need to know. need to know if you have not. If you have not performed any Performed any dynamic analysis dynamic analysis before we start before we start bro. So start crew is using a lump and pro so stop rule is using a lump and mass approach so it means that. mass approach so it means that. The mass of one beam is split into 2. The mass of one beam is split into 2. Concentrated mass is applied to the end Concentrated mass is applied to the end to the ends of that Beam and so on so. to the ends of that Beam and so on so. Uh the mass is also installed are Uh the mass is also installed are defined as forces and then internally defined as forces and then internally the program is converting them into. the program is converting them into. Mass is all possible directions should be Mass is all possible directions should be defined so if a Mass in a bit in a 3D. defined so if a Mass in a bit in a 3D. Structure can move in 3 directions, Structure can move in 3 directions, so it has to be defined 3 times in so it has to be defined 3 times in once an ex once in Y and once in. once an ex once in Y and once in. Instead. Instead. And you need to do that with And you need to do that with the self waited all with all the the self waited all with all the masses that need to be considered. masses that need to be considered. In in your case. In in your case. The values should be unsigned if in The values should be unsigned if in static we specify that self wages static we specify that self wages going downwards with a minus one. going downwards with a minus one. Done in dynamic we do not need. Done in dynamic we do not need any we do not need to use minus one just We do not need to use minus one just one why becaus the mask and move. one why becaus the mask and move. Up and down so the minus has Up and down so the minus has no meaning but if you. no meaning but if you. Uh forgetting AD minus then. Uh forgetting AD minus then. Then you would need to put all the forces Then you would need to put all the forces as minus hold the masses with minus why. as minus all the masses with minus why. Because if some are in with the minus sign. Because if some are in with the minus sign another. Another others are with the plus sign Others are with the plus sign then then they could subtract each other. they could subtract each other. And the total mass is considered And the total mass is considered in the in the analysis. in the in the analysis. So if you have forces applied at So if you have forces applied at the mid span or anywhere in on a the mid span or anywhere in on a beam like an equipment on a beam beam like an equipment on a beam. you have applied it. You have applied it as a concentrated force. As a concentrated force and And then this concentrated force then this concentrated force will be split into 2 masses. will be split into 2 masses. One at the end node and one and One at the end node and one and another portion at the other and node another portion at the other and node so generally this is not advised. so generally this is not advised. Becaus this equipment this Becaus this equipment this mass is really at the center, mass is really at the center, so it should be it should remain there so. so it should be it should remain there so. When you have a concentrated force. When you have a concentrated force. It's good to create nodes there, It's good to create nodes there, so that you make sure that the the masses. so that you make sure that the the masses. Is uh is used at the real Is uh is used at the real position where it is? OK. position where it is? OK. So this is this is mostly the most So this is this is mostly the most important things to know about the Mass, important things to know about the Mass, the mass definition. the mass definition. Of course in a real building. Of course in a real building. We don't need to create as many as many We don't need to create as many as many points internal points as we can see here. points internal points as we can see here. At least 1 single point in the At least 1 single point in the middle of a beam for example, middle of a beam for example, is enough to at least to capture the bending. is enough to at least to capture the. Bending effects of that of that being. Effects of that of that be. When it is expected of course. What it is expected of course? So those masses in the very old So those masses in the very old versions versions were defined in the same were defined in the same in the same in the same load case where the load case where the Reload or the Time is to reload or the response response spectrum where were defined. spectrum where were defined. Since uh 3 or 4 years we have, Since uh 3 or 4 years we have, we have entered or we have introduced we have entered or we have introduced a new method is the reference. a new method is the reference. Lowe's and this is one, Lowe's and this is one, I advise you to use so you can I advise you to use so you can go and create a reference load. go and create a reference load. And you need to specify the type as And you need to specify the type as mass so by specifying there's Mass. mass so by specifying there's Mass. The program will automatically The program will automatically understand that. understand that. The the content of this reference The the content of this reference load is to be. load is to be. Considered as the mass news for to Considered as the must use for to create create the mass matrix of the structure. the mass matrix of the structure. So everything is entered in the So everything is entered here, the advantage here is that when you advantage here is that when you created and as a reference load. created and as a reference load. It will be used by any other It will be used by any other dynamic analysis, dynamic analysis, it be used by static equivalent. it be used by static equivalent. Analysis method by response spectrum Analysis method by response spectrum analysis method by just a simple model analysis method by just a simple model extraction or by a time history analysis. extraction or by a time history analysis. SO1 single definition will be SO1 single definition will be considered by all subsequent analysis. considered by all subsequent analysis. OK. OK, Another method to check your mouse another method to check your message is because we often copy and paste because we often copy and paste in the text file when you have in the text file when you have multiple masses and sometimes we? multiple masses and sometimes we? Forget to copy some parts is to check Forget to copy some parts is to check what the check the distribution of the what the check the distribution of the masses over the nodes so you can see here, masses over the nodes so you can see here, the program is creating. the program is creating. A file called it takes the A file called it takes the same name as your input file, same name as your input file, but it has another score Mass. but it has another score Mass. Attitude dot T XT and you can Attitude dot T XT and you can see here node by node in each see here node by node in each direction the masses that were direction the masses that were distributed by the program. distributed by the program. And the most interesting thing at the end, And the most interesting thing at the end, you can see the total mass is so you can see the total mass is so if you intended to have the same. if you intended to have the same. Masses in the three direction at Masses in the three direction at least you can see here that you have least you can see here that you have the same values in the 3 directions. the same values in the 3 directions. And the damping I said, Under damping I said, I there's one slide for the damping so start. I there's one slide for the damping so start. Over 3 types of damping so we Over 3 types of damping so we have one single damping ratio, have one single damping ratio, which is valid for. All modes. which is valid for. All modes. And you need to provide it And you need to provide it the user needs to provide it. the user needs to provide it. We have a model damping which is. We have a model damping which is. A dumping for each mode or group of A damping for each mode or group of modes so it could be provided by modes so it could be provided by the user or it could be generated. the user or it could be generated. Automatically by by the program Automatically by by the program by based on some procedures like by based on some procedures like the Rayleigh railing procedure. the Rayleigh railing procedure. And we have composing damping so And we have composite damping so compose it dumping is a dumping that is composing jumping is a dumping that is based on or depending on the material. based on or depending on the material. Or on the Springs the support Springs, Or on the Springs the support Springs, so if you have different materials so if you have different materials likely they will have different likely they will have different material damping ratio. material damping ratio. So you can specify in the So you can specify in the material properties, material properties. You can specify the damping you can specify the dumping. and you can also specify it. And you can also specify it for the For the spring supports and then the spring support and then the program will program will combine those information combine those information to come up with. to come up with an average damping. An average dumping. Based on the Mass is coming from Based on the mass is coming from concrete or steel or from support concrete or steel or from support so the program will determine. so the program will determine. An average an average value for the damping. An average an average value for the damping. OK. Finally some additional parameters, OK. Finally some additional parameters, so you have the Eigen method, so you have the Eigen method, so Eigen method is a method that is used to. so Eigen method is a method that is used to. Extract the mode shape, Extract the mode shape, so we historically we had only one method, so we historically we had only one method, which was the subspace method. which was the subspace method. And in maybe 2 years ago, And in maybe 2 years ago, 3 years ago 3 years ago we implemented we implemented additional methods. additional methods. So we have the Arnold Lanxess method. So we have the Arnold dealings this method. Already, All the load dependent vectors a load dependent vectors from Mister Ritz. from Mister Ritz. OK and these can help you. OK and these can help you. Uh this can help you get rid of a This can help you get rid of a problem like the Ritz method is problem like the Ritz method is good because but it's available. good because but it's available. Only in the advanced license of star pro. Only in the advanced license of star pro. OK, It is it has the advantage of it is it has the advantage of extracting only the significant modes, extracting only the significant modes so if you have 100. so if you have one hundred mode. Mode and only 10 of them are I'm only 10 of them are significant significant are useful than it are useful, then it will go and extract only those 10. will go and extract only those 10. UH-10 modes because those modes have UH-10 modes because those modes have significant participation factor. significant participation factor. For the applied load. For the applied load. A cutoff mode shape, A cutoff mode shape, so if you want to restrict the so if you want to restrict the instruction to a certain number of. instruction to a certain number of. Modes then you can use cut off mode Modes then you can use cut off mode shape got a frequency by default. shape got a frequency by default. It's limited to one 100. It's limited to one 100. It hurts so you can break this limitation. It hurts so you can break this limitation. If you want to go beyond that If you want to go beyond that limit cutoff time. limit cutoff time. If you are running a time history If you are running a time history analysis and this is the subject of our. analysis and this is the subject of our. Session today, Session today. then by default, Then by default, the program will analyze only the program will analyze only for the duration of the load. for the duration of the load. And uh if you want to go beyond And uh if you want to go beyond so after the load. so after the load. Application finishes stop so behind Application finishes stop so behind behind this uh behind behind this time. behind this uh. Behind behind this time. What happened is that the structure What happened is that the structure will will vibrate Indiana will will will vibrate Indiana will vibrate in a free vibration vibrate in a free vibration mode because there is no app. mode because there is no app. Applied load, Applied load, so, so, so sometimes it's interesting to so sometimes it's interesting to to check what's happening after to check what's happening after the application of the load. the application of the load. And then we have mode select And then we have mode select which is not accessible which is not accessible in the graphical interface. in the graphical interface. It's iaccessible only by text so mode select. It's iaccessible only by text so mode select. If you have 10 modes and you want to If you have 10 modes and you want to select only to use only the first mode, select only to use only the first mode, then you can just say I want to. then you can just say. I want to use only the 1st or the 3rd mode Use only the 1st or the 3rd mode and and that's it because you know that mode. that's it because you know that mode or you want to see the effect of. Or you want to see the effect of one One single mode, you can isolate one single mode, you can isolate one mode mode or multiple modes to check there. or multiple modes to check there. Contribution to your response. Contribution to your response. OK, the two last slides about OK, the two last slides about the post processing results for a the post processing results for a time history analysis, you have. time history analysis, you have. Information in the text file so Information in the text file so the output file as you know, the output file as you know, we have warnings we have nodes and we have. we have warnings we have nodes and we have. Error messages there, Error messages there, but we have also intimidate but we have also intimidate results that could be useful. results that could be useful. To the user so these are the type of To the user so these are the type of results so the mass participation factor results so the mass participation factor in percentage so you can see which modes. in percentage so you can see which modes. Like we see this is the second mode Like we see this is the second mode in this case, and we can see that. in this case, and we can see that. 1898% in the X direction are is A 898% in the X direction are is A is the contribution of that mode, is the contribution of that mode, so it means that mode is really so it means that mode is really important in the response of. important in the response of. Of the structure. Of the structure. OK, so you can limit your your OK, so you can limit your your results results to that mode if you want to that mode if you want to get to get rid of all the other modes. rid of all the other modes. Uh you can see the frequencies that period, Uh you can see the frequencies that period, the contribution of the contribution modes. the contribution of the contribution modes you can see that time history. You can see that time. History analysis details. Analysis details so you can see here, So you can see here, the number of modes existing number of modes. the number of modes existing number of modes those of which those Those of which those that were extracted. that were extracted. Gay requested 30 we have existing 5054. Gay requested 30 we have existing 5054. You can see also here that I'm history You can see also here that I'm history analysis details so this is a time step, analysis details so this is a time step, the number of cycles. the number of cycles. On you have. Can you have? The duration has been since The duration has been since we selected 30 cycles. we selected 30 cycles. So, in this case, we have 30, one seconds. So, in this case, we have 30, one seconds. And we have 22,000 model 22,000 And we have 22,000 model 22,000 steps so for each step. steps so for each step. There is a equation is checked. There is a equation is checked. OK and at the end, OK and at the end, you have the maximum bass sheer you have the maximum bass sheer so it tells you that. so it tells you that. Uh in the X direction, Uh in the X direction, it's in kilograms. it's in kilograms. The value is 909 thousand five The value is 909 thousand five hundred and it happens at time, hundred and it happens at time, 5.8 seconds in the Y direction the maximum. 5.8 seconds in the Y direction the maximum. Is this one this value? Is this one this value? I'd happening at this time and the I'd happening at this time and the same thing for the Zedd? same thing for the Zedd? Uh does add value OK graphically we Uh does add value OK graphically we can also check some results so you can. can also check some results so we can. Display the modes. Display the modes. You can have the most and the You can have the most and the participation faxes here an? participation faxes here an? You can display the graphs, You can display the graphs, so the grass to get to those graphs, so the graphs to get to those graphs, you need to go to the layouts. you need to go to the layouts. And then open the graphs. And then open the graphs. So you can see the displacement So you can see the displacement or the the velocities or the or the the velocities or the acceleration for each node overtime. acceleration for each node overtime. And you can animate the mode And you can animate the mode shape or animate. shape or animate. Also, the time history displacements by Also, the time history displacements by using those time steps here, using those time steps here, so you can. so you can. How to make this? How to make this? OK, I'm going now to share my screen so OK, I'm going now to share my screen so you should see that on your media view. you should see that on your media view. So. It takes a few seconds. So. It takes a few seconds. OK. Now. The first example uh and OK. Now. The first example uh and you can see it on, you can see it. you can see it on, you can see it. Also on the slide. Also on the slide. The next slide, so the next slide is. The next slide, so the next slide is. An example taken from. An example taken from. A reference book Mister Biggs, A reference book Mister Biggs, so this is a simple simple beam so this is a simple simple beam that is subject submitted to. that is subject submitted to. Uh a uniform force that is very in return, Uh a uniform force that is very in return, so we can see that the value so we can see that the value of the forces applied. of the forces applied. All over the The beam. All over the The beam. And at 080 and at Time T1 And at 080 and at Time T1 at reaches a value of Q1, at reaches a value of Q1, which is 10,000, Newton by meter. which is 10,000, Newton by meter. An it goes like that until T2 An it goes like that until T2 constant constant until T2 and then it stops. until T2 and then it stops OK. So we need to enter this, this value. So we need to enter this, this value. We can see here that the from the We can see here that the from the textbook that the only frequency. textbook that the only frequency. A contributing frequency that A contribution frequency that was considered is this one, was considered is this one, it's a bending. it's a bending. Mode, which frequency of 6063 Mode, which frequency of 6063 Hertz and the expected. Hertz and the expected. Displacement value is 2.47 millimeters. Displacement value is 2.47 millimeters. And it's happening at about mid And it's happening at about mid span 'cause this is a 5 meter. span 'cause this is a 5 meter. Beam and it's happening at the Beam and it's happening at the end of the application load. end of the application load. So this is something I'm going to show you. So this is something I'm going to show you. On the screen, On the screen, so the beam has been created as you can see. so the beam has been created as you can see. To try and match the same results. To try and match the same results. I have been I needed to split in smaller. I have been I needed to split in smaller. A smaller elements this is not what we A smaller elements this is not what we do in real life that those those are do in real life that those those are examples as if we use in the validation. examples as if we use in the validation. Manual. So this will split in smaller elements. So this will split in smaller elements. And we need to go to loading. And we need to go to loading. Under loading we have definition and Under loading we have definition and we can see that we defined already. we can see that we defined already. The mouse magic so if I double click. The mouse magic so if I double click you can see this is a mass You can see this is a mass loading type loading type Mass under which. Mass under which we have only entered. We have only entered the self The self wait because this is what? would be cause this is what? We considered so I entered the Selfridge. We consider so I entered the Selfridge. In One Direction only with a positive In One Direction only with a positive value of one One Direction Becaus. value of one One Direction Becaus. This is a plane. This is a plane. A problem, A problem, which is so we are looking which is so we are looking only at the Y vibration, only at the Y vibration, so why is only this is the reason why so why is only this is the reason why we we need only to specify the self right? need only to specify the self weight? And the wind direction now, In the Y direction now, what about the time history load, what about the time history load, so you can go to time history add. so you can go to time history add. And then we need to specify here. And then we need to specify here It is a force. The type is one. it's the force. The type is one. You can leave it OK. You can leave it OK. It's a time history versus a It's a time history versus a time versus force not harmonics time versus force not harmonics. Oh harmonic clicking here. So harmonic clicking here it takes you to Harmonic. Take such a harmonic go back Go back here so the value at 0, here so the value at 0, I can see it's zero kilonewton. I can see it's zero kilonewton. OK. OK. And then at Time T1 which is 0.0. And then at Time T1 which is 0.0. 0238. 0238. OK. Or. Sorry. J. Or. Sorry. There is one, too many 0. There is one, too many 0. The value is suppose we can. The value is suppose we can. Make 1. And at 0.0595 the value Make 1. And at 0.0595, the value is one so I can put one. is one so I can put one and not. I'm not not the force so just to give it. Not the force so just to give it the same shape, but then, The same shape but then, when I will apply when I will be when I will apply when I will be in a position to apply the load, I can. in a position to apply the load. I can use an amplifying factor Use an amplifying factor to to make it match with my value, make it match with my value, the value that is requested. the value that is requested. So that's all. So that's all. I just need to do add it has been I just need to do add it has been added I can go to define parameters. added I can go to define parameters. So the dumping I was told it's This is So the dumping I was told it's This is an undamped problem structure SO000. an undamped problem structure SO000. One one. OK, the time step, One one. OK, the time step, I don't need to change anything. I don't need to change anything. The arrival time is at 0. The arrival time is at 0. I have only one force and it I have only one force and it will act at the same time. will act at the same time. Add. OK are we close. Add. OK and we close. OK, now we can go to. OK, now we can go to. Load case detail I created a static value, Load case detail I created a static value, so in fact, so in fact, this value that you can see here already. this value that you can see here already. Because we can only apply the loads to nodes Because we can only apply the loads to nodes so 10 Thousand 10K Newton over 5 meters so. so 10 Thousand 10K Newton over 5 meters so. We have about 68 nodes so We have about 68 nodes so I have entered this, I have entered this, I've calculated this value I've calculated this value for each node so we can just. for each node so we can just. Use the same value for the dynamic load. Use the same value for the dynamic load. So the dynamic load we can add. So the dynamic load we can add. At Time history. A time history. And then it's a time load applied to note. And then it's a time load applied to note. The arrival time is the first The arrival time is the first arrival time at 0, the defined type, arrival time at 0, the defined type, we defined only one which is. we defined only one which is. Of course. Of course. And the direction it's in the FY And the direction it's in the FY direction on the amplifying factor. direction on the amplifying factor. We can use the same value that We can use the same value that we see here for the static so. we see here for the static so. 0 point. 7. 0 point. 7. 3. 3. 5. 5. 353. I'm OK. And we can close 353. OK. And we can close now we can. Just switch to. now we can. Just switch to. Select this one and apply it on all nodes. Select this one and apply it on all nodes. No need to apply on the supports No need to apply on the supports because there will be no. because there will be no. No action on the support so we No action on the support so we can just apply. Selected notes. can just apply. Selected notes. OK and this is a symbol that appears OK and this is a symbol that appears when you apply a time history. when you apply a time history. Load so nothing else. Load so nothing else. We just need now to go to the analysis. We just need now to go to the analysis. The performing Alesis The performing Alesis Instruction is already there, Instruction is already there, we can run the analysis. we can run the analysis. And you can see on the slide And you can see on the slide the expected results 2.47. the expected results 2.47. So we have 2 warnings to notes we So we have 2 warnings to notes we can go and check 2 warnings to notes. can go and check 2 warnings to notes. OK. And we can see here. OK. And we can see here. So it's just the Apostle ratio, So it's just the Postal ratio, the mass model. the mass model. It has been found as a reference load. It has been found as a reference load. So it's just telling you this is what is? So it's just telling you this is what is? It's going to use. It's going to use. And we can see here that there And we can see here that there are 6 modes that were requested are 6 modes that were requested because this is the default, because this is the default, but in fact, 68 modes. but in fact, 68 modes. Are available? Are available? The advanced method used in Eigen The advanced method used in Eigen Solution 'cause I'm using the start Solution 'cause I'm using the start advanced license and I can see advanced license and I can see the modes and I can see here that. the modes and I can see here that. My first vote is exactly what I'm My first mode is exactly what I'm looking for is 63, almost 63. looking for is 63, almost 63. This is the first mode if I don't This is the first mode if I don't want to consider the other modes. want to consider the other modes. Let's see first these are the model Let's see first these are the model weights and we can see that the weights and we can see that the first mode is contributing up to. first mode is contributing up to. 82% and then the 3rd mode is contributing 82% and then the 3rd mode is contributing by 7.7 and then the 5th mode, so, so that. by 7.7 and then the 5th mode so. So that the total of the 6 modes The total of the 6 modes or the or the one three and 5 is 93%. one three and 5 is 93%, so we have not reached. So we have not reached. The 100% but 92% is quite good so if we want The 100% but 93% is quite good so if we want to match the to match the results given by the software. results given by the software. We need to tell the program too. We need to tell the program too. Stop by the first mode, Stop by the first mode, so I need to close that. so I need to close that. Go to CMD file. Go to CMD file. I like doing it I like doing it with the with with the with the command file. the command file. So I just need to. So I just need to. Come here and then just do so cut off. Come here and then just do so cut off. Mode one so I want only the Mode one so I want only the contribution of one mode, contribution of one mode, which happens to be the first mode. which happens to be the first mode. I just need to re analyze. And I just need to re analyze. OK. And I'll go to. OK. And I'll go to. Output file again. Output file again. And you can see. And you can see. Now we have only one mode and in Now we have only one mode and in the mass participation factor. the mass participation factor. We have only one mode. We have only one mode. And what you can see here at And what you can see here at the bottom is the information the bottom is the information about this time is to analysis. about this time is to analysis. We see here, the dumping we see here. We see here, the dumping we see here. The the time step, The the time step, the number of modes considered and then the number of modes considered and then we have the duration which was 0.06. we have the duration which was 0.06. Is the total duration of the Is the total duration of the application of the load and for application of the load and for that reason we have only 43? that reason we have only 43? 43 steps so we can see that in 43 steps so we can see that in the Y direction we have minus 41. the Y direction we have minus 41. Minus 41 kilonewton. Minus 41 kilonewton. Uh this is the maximum bass shared is Uh this is the maximum bass shared is the sum of the two of the two supports. the sum of the two of the two supports. By the way we applied 10 kilometers By the way we applied 10 kilometers in perimeter. It's 5 meter. in perimeter. It's 5 meter. It means we have a total of 50K Newton. It means we have a total of 50K Newton. And the response is even lower, And the response is even lower, so in dynamic it could be higher so in dynamic it could be higher or lower so in this case, we have. or lower so in this case, we have. Less than what we applied. So. Less than what we applied. So. Now, if we go to the to the. Now, if we go to the to the. Post processing mode. Post processing mode. OK. OK. And we select the central node so I And we select the central node so I think the central node. Set it as 59. think the central node. Set it as 59. OK. Um this node we can check here. OK. Um this node we can check here. The maximum displacement so we can see The maximum displacement so we can see that the maximum wire displacement. that the maximum wire displacement. It's 2.42 Seven and we had as a result, It's 2.42 Seven and we had as a result, in if you check the slide. in if you check the slide. It shows 2.46. Mm OK, It shows 2.46. Mm OK, which is very close to which is very close to what we what we have found we can also. have found we can also. While selecting this node we can also While selecting this node we can also go to the layout and Displacement go to the layout and Displacement and we can see so here we have. and we can see so here we have. We can also we can show the results We can also we can show the results for one note or for a group of nodes for one note or for a group of nodes if you have a group of nodes in of. if you have a group of nodes in of. On the floor, On the floor, then the program will take the then the program will take the average displacement and display average displacement and display the graph for this group of nodes. the graph for this group of nodes. In that case, we are not. In that case, we are not. And we're not in that case so And we're not in that case so we are only interested in. we are only interested in. One note and you can see here, One note and you can see here, the displacement. the displacement. Of your node so it started from Of your node so it started from rest position, and it went to that. rest position, and it went to that. Top position on it started vibrating Top position and it started vibrating around an equilibrium around an equilibrium region region here position here and here position here and the value the value at the end is about. at the end is about. A little bit less than 2.43 it's around here. A little bit less than 2.43 it's around here. So this is uh you can also So this is uh you can also display other velocity. display other velocity. And you can see the velocities or you And you can see the velocities or you can see the accelerations as well. can see the accelerations as well. OK, next. Example we have OK, next. Example we have seen here a variant load, seen here a variant load, so the load is applied at the so the load is applied at the same point and we have another same point and we have another example of a moving load so. example of a moving load so. I know time history analysis has been I know time history analysis has been used by by some users to simulate the used by by some users to simulate the movement of a car on a bridge for example, movement of a car on a bridge for example, so we have in this case is. so we have in this case. Small single beam of 10 meters long. Small single beam of 10 meters long. Uh we have a force of 48 kilometers an Uh we have a force of 48 kilometers an applied here at this location and these applied here at this location and these forces moving at a speed of 10 meters forces moving at a speed of 10 meters per second so it means that it will. per second so it means that it will. Trust the whole beam in one second. Across the whole beam in one second. And we have values at different And we have values at different positions values of displacement positions values of displacement at different instant values of the at different instant values of the displacement in C at the Point C at. displacement in C at the Point C at. 0.1 zero point 2 and 0.5 so. 0.1 zero point 2 and 0.5, so let me open this. Let me open this. File. File. Moving load. OK, so in this case, Moving load. OK, so in this case, we did exactly as it was suggested we did exactly as it was suggested by the exercise is we have not. by the exercise is we have not. We didn't split it in multiple We didn't split it in multiple multiple multiple points. multiple multiple points. We have split it, We have split it. it only in few points for. It only in few points for Each one is a position So what we have here each one is a position so. What we have here is we have created 8 is we have created 8 intermediate points, intermediate points so it's starting so it's starting here. here on its 1 meter for each length. On its 1 meter for each length. And we made in America move. And we made in who made it move. Every 2nd to be on one. Every 2nd to be on one. All the nodes so how did we do that? Of the nodes so how did we do that? In fact you can see on the slide In fact you can see on the slide that one of the options that was that one of the options that was suggested and this is what we did. suggested and this is what we did. Is to create a load profile Is to create a load profile triangular load profile? triangular load profile? Which is starting at 0? Which is starting at 0? And then 1 second later is at one. And then 1 second later is at one. So at the maximum and then once they are So at the maximum and then once I cannot not second sorry 0.1 second and 0.1 second. second sorry 0.1 second and 0.1 second. So this is to simulate the fact So this is to simulate the fact that the load when it leaves this that the load when it leaves this point and go into that point. point and go into that point. Then it is somewhere in Then it is somewhere in the middle for example, the middle for example, then we can consider that. then we can consider that. Part of the load is supported by Part of the load is supported by this node and part of the load this node and part of the load is supported by the other node. is supported by the other node. Until it reaches the other node 100% Until it reaches the other node where 100% is supported here and 0 is here, is supported here and 0 is here, so This is why we created this triangular. so This is why we created this triangular. Triangular. A shape. Triangular a shape. Profile for the load and this is. Profile for the load and this is. The way we did it so we Went to loading. Uh the way we did it so we Went to loading. Definition again the reference load Definition again the reference load is there to to specify the must be is there to to specify the must be considered now time history definition, considered now time history definition, we can go to. we can go to. Add a new definition, Add a new definition, we can leave the we can leave the same integration same integration time stepped in general. time stepped in general, this is. This is this is enough this is good. Uh this is uh enough this is good. Force and then we can specify. Force and then we can specify. We need to save the values We need to save the values that intermediate timesteps, that intermediate timesteps, so we can this time check the safe box. so we can this time check the safe box. OK and then we can say at 0. OK and then we can say at 0. Well, at 0. My force is equal to 0. Well, at 0. My force is equal to 0. And then at 0.1. And then at 0.1. The force is equal to 1, The force is equal to 1, the full force, or minus one the full force, or minus one if it's directed downwards. if it's directed downwards. And then at 0.2 it goes back to 0. And then at 0.2 it goes back to 0. OK, so and that's it, OK, so uh that's it, so we can just add it. so we can just add it. And we can define the parameters, And we can define the parameters, it's once again there is. it's once again there is. No uh no damping nothing to change No uh no damn thing nothing to change into time step, but this time, into time step. But this time, we have multiple timesteps becaus. we have multiple timesteps becaus. We need to tell the program that. We need to tell the program that. The force is moving so the first one, The force is moving so the first one, is 0 second and then 01 second. is 0 second and then 01 second. 02. 02. 0203. 04. 05. 06. 0203. 04. 05. 06. 07. Finally, 08. An ad. 07. Finally, 08. I'm sad. I'm close that's it, so now we can go to. I'm close that's it, so now we can go to. The load case detail. The load case detail. I have a load case and we can I have a load case and we can add the force and we can tell add the force and we can tell the program that we are using. the program that we are using. A time has to reload. It's a time load. A time has to reload. It's a time load. Arrival time so will come to the Arrival time so will come to the arrival arrival time later in all cases, time later in all cases, it's an FY. it's an FY. But we have. But we have. OK. OK, now the force on here in the Now the force on here in the amplification factor of course, amplification factor of course, because we said minus one. because we said minus one. On the 4th we're told it's 48 kilometers, On the 4th we're told it's 48 kilonewtons, so we can enter just 48 so we can answer just 48 which will multiply the the. which will multiply the the. The load profile that we created. The load profile that we created. Now we can enter. Now we can enter. The load with a arrival time 0. At. The load with arrival time 0. At. Arrived the same load arrival time 01. Arrived the same load arrival time 01. Arrival time 02. Arrival time 02. 03. Well, I have only 8 of them. 03. Well, I have only 8 of them. On the Wise sometimes it's On the Wise sometimes it's easier to go through the text easier to go through the text file when we have many of them. file when we have many of them. I think I entered. 0. I think I entered zero yes, Uh yes, so this is FY Type 1. so this is FY Type 1. At all know the arrival time, At all know the arrival time, 6 now arrival time 7. 6 now arrival time 7. So 7 is this one is the So 7 is this one is the sequential number OK. sequential number OK. OK. And then 8. Add and finally night. OK. And then 8. Add and finally 9. Add OK now we can go and pick so this one. OK, now we can go and take so this one. I will assign it to this. I will assign it to this. And then this one, And then this one, I will sign it to this one. I will sign it to this one. And then this one to this one. This one. And then this one to this one. This one. To this one. To this one. This one to this one. This one to this one. I think it's I think it's 1235123. 5 and 6. 1235123. 5 and 6. OK. Then 7. OK. 7. Then. 8. And then 9. Then. 8. And then 9. OK. I'm done. OK. I'm done. So now I can run the analysis, So now I can run the analysis, so just run the analysis analyze. Hunt. so just run the analysis analyze. And. Performing arts is already there. Perform analysis is already there. And we can just run the analysis. And we can just run the analysis. OK, we can go to the. OK, we can go to the few output The output file so we are applying. file so we are applying. We are applying a force of We are applying a force of we can see here all the. we can see here all the. All the modes the 6 first Moses All the modes the 6 first knows that were extracted the model weights. were extracted the model weights. The participation factors The participation factors so we can see only one 3? so we can see only one 3? 1 three and 5 are are OK but. 1 three and 5 are are OK but. We are at 99, which is very good, We are at 99, which is very good, so we can, we can keep those. so we can keep those. The dumping has been considered The dumping has been considered in old cases to be this one. in all cases to be this one. So maybe I should have added So maybe I should have added 10 to make it really 0 because. 10 to make it really 0 because. It's showing in a value it means It's showing in a value it means that it's not total easier but. that it's not total easier but. Uh I guess the results will be OK. Uh I guess the results will be OK. Uh in this case, Uh in this case, we have 720 steps and you can we have 720 steps and you can see here that we are applying. see here that we are applying. If you remember, If you remember, we are applying 48th kilonewton, we are applying 48th kilonewton, a moving load of 48 kilometers an we have. a moving load of 48K Newton and we have. A Bayes sheer maximum base here of 80, A Bayes sheer maximum base here of 80, which is more than the 48 which is more than the 48 OK OK and the other example. and the other example. We had less in this time, we have. We had less in this time, we have. We have more so the effect of We have more so the effect of time time of a dynamic of the dynamic of a dynamic of the dynamic load load is much more than the. is much more than the applied. The applied static load so we can check Static load so we can check the the results so you can see on the. results so you can see on the. On the on the slide that the maximum On the on the slide that the maximum value is at mid span is zero point. value is at mid span is zero point. As 1.43 so we can go to. There is 1.43, so we can go to. The post processing mode. The post processing mode. And. And. Select the load case, Select the load case, we can select that node. we can select that node and we have. And we have. 1443 in millimeters. 1443 in millimeters. Where the result expected is Where the result expected is 1437 so we are not very far 1437 so we are not very far from from the from the results so? the from the results so? This is we have a have a This is we have uh, yeah, we have a difference of less than 1%. difference of less than 1%. With what is a? With what is a? What is expected by the theoretical What is expected by the theoretical calculation OK so this is the calculation OK so this is the maximum value and this happens? maximum value and this happens at? At 0.5 what, if I wanted to see. And 5 what, if I wanted to see. And what happens is 0.1 or 0.2, And what happens is 0.1 or 0.2, then in that case. then in that case. While this is selected go to While this is selected go to layout displacement and you layout displacement and you can see can see the Displacement. the Displacement. Of this node. Of this node. Overtime. Overtime. OK and we can also right click here and OK and we can also right click here and we can say save that in a text file. we can say save that in a text file. So we can save it here and say. So we can save it here and say. It's called this displacement 101. It's called this displacement 101. OK. Uh. OK. Uh. If I open the file. If I open the file. Displacement 101 so this is node 7. Displacement one or one so this is node 7 an you can check if you And you can check if you see the slider, the slide share. see the slide the slide it. It says that at 0.2 seconds or 0.1. It says that at 0.2 seconds or 0.1. You have values so these are the SEC and You have values so these are the SEC and these are the displacements in millimeters. these are the displacements in millimeters. So you can see here at 01, which is. So you can see here at 01, which is. Here it is 01 we have minus 41. Here it is 01 we have minus 41. Where we have minus 47 in the Where we have minus 47 in the theoretical results or maybe be theoretical results or maybe be cause cause my dumping is not completely 0? my dumping is not completely 0? But it's very close to. Very close to. To what what is expected so 02 we have To what what is expected so 02 we have minus 313 where 323 are expected so. minus 313 where 323 are expected so. We're not that far from what is We're not that far from what is what is expected OK so this is? what is expected OK so this is? Uh this is uh a text file that Uh this is uh a text file that you can that you can get. you can that you can get. Because it's not easy on the graphs Because it's not easy on the graphs of of star pro to check for other results star pro to check for other results than the maximum or the minimum. than the maximum or the minimum. So if you want to see intimidate So if you want to see intimidate points, points done the best way is then the best way is to go and to go and check those those. check those those. Those fight. OK. Windows file. OK, the 3rd example. The 3rd example. By the way here. And by the way here. We have extracted multiple 6 modes, We have extracted multiple 6 modes, but only 3 were significant, but only 3 were significant, but another but another method to get those is method to get those is if you go to. if you go to. If you go to analysis. If you go to analysis. Miscellaneous commands and if Miscellaneous commands and if you have the advanced version, you have the advanced version, you can go to set Eigen method. you can go to set Eigen method. And then you can. I mean, you can. Select the Ritz Vectors Rich doctors, Select the Ritz Vectors Rich doctors, they have the advantage of they have the advantage of extracting only the significant. Uh. extracting only the significant. Uh. Mode shapes. And mode and frequencies. Mode shapes. And mode and frequencies. Now that we have done that we Now that we have done that we can run rerun the analysis. can run rerun the analysis. OK, we can go to the output file. OK, we can go to the output file. The Eigen solution. The Eigen solution. And you can see it went even And you can see it went even further in the first case it only further in the first case it only calculated the first six but. calculated the first six but. Uh at up to 55 and here it Uh at up to 55 and here it calculate the first six. calculate the first six. But the advantage here is that those 6. But the advantage here is that those 6. None of them has a 0. None of them has a 0. Only this one has a 0 the second one, Only this one has a 0 the second one, but all the rest. but all the rest. They have a minimum participation at the end, They have a minimum participation at the end, you have 100? you have 100? Percent of participation factors. Percent of participation factors. OK, so this is useful as I said OK, so this is useful as I said in the very beginning. in the very beginning. If you have your fears distance. If you have your fears since it's It's based on model superposition based on models superposition an if you have. an if you have. Cases where the frequencies are very high, Cases where the frequencies are very high, then you will need to go and change for then you will need to go and chase for those high frequencies, so one way to. those high frequencies, so one way to. A work around this uh. A work around this uh. This limitation is to use the eigenvectors. This limitation is to use the eigenvectors. Uh to go directly to the most significant. Uh to go directly to the most significant. Uh. Mode shapes OK. Uh. Modchips OK. Um. The last example. Um. The last example. Is about ground motion? Is about ground motion? So it will be very quick and So it will be very quick and you can see here. you can see here. This is an example. This is an example. That is provided with start when you That is provided with start when you install start or you will find it there. install start or you will find it there. So it's on the ground the So it's on the ground the ground acceleration. ground acceleration. And uh how to specify the And uh how to specify the ground acceleration again. ground acceleration again. Everything being specified Everything being specified the Ready except for the time already except for the time history load so just go to add. history load so just go to add. And this time it's an acceleration. And this time it's an acceleration. On the acceleration has to be. On the acceleration has to be. Has to be entered here as? I have to be entered here as. An external file so the external file An external file so the external file is a file that we, we saved Indiana is a file that we, we saved Indiana in the same in the same folder. in the same in the same folder. OK. And I'm opening it so it's. OK. And I'm opening it so it's. EQ earthquake data and you EQ earthquake data and you can see this is a list of. can see this is a list of. Pair of points with the time and Pair of points with the time and the acceleration value in the in the acceleration value in the in the defined unit system so just. the defined unit system so just. And EQ. Data. Dot. TXTXT. And EQ. Data. Dot. TXTXT. And the program will search for And the program will search for those values there, so just. those values there, so just. OK. And the parameter is 05 OK. OK. And the parameter is 05 OK. Oh. Oh. OK. And. Analyze. We can check let me OK. And. Analyze. We can check let me check if there check if there is any problem here. is any problem here. So we can see here. OK, So we can see here. OK, just so this was the original 1. just so this was the original 1. Because my memory memory. Because my memory memory. Fails I just put OK right on time. Fails I just put OK right on time. Yeah, so this is uh. Yeah, OK, Yeah, so this is uh. Yeah, OK, so I see what happened. So nothing. so I see what happened. So nothing. The damping so the arrival time was Oh yes. The dumping so the arrival time was Oh yes. I forgot to specify the arrival time so I forgot to specify the arrival time so This is why I had this. This is why I had this error message OK. I would just delete this one. I would just delete this one. So if you forget to specify the arrival So if you forget to specify the arrival time you will have we will have an error time you will have we will have an error message upon analyzing the file so I just. message upon analyzing the file so I just. Reinstate those lies. Reinstates those lives. Go back So what we have done here, Go back So what we have done here, so this is the ground motion graphically. so this is the ground motion graphically. We can just specify it this way. We can just specify it this way. So loading. It has been defined. So loading. It has been defined. Here in the dynamic load you can just add. Here in the dynamic load you can just add. An time is to reload. An time is to reload. And ground motion arrival time, And ground motion arrival time, 0 direction X defined time this one and 0 direction X defined time this one and the amplification cause the value is in. the amplification cause the value is in. And the final were entered in terms In the file were entered in terms of GS of acceleration so here we of GS of acceleration so here we enter the value of the acceleration, enter the value of the acceleration, which is 9 point. which is 9 point. 81 meters per squared second ad OK and. 81 meters per squared second ad OK and. The combinations here. The combinations here. Dynamic analysis this dynamic analysis of of. Dynamic analysis this dynamic analysis of of. Uh using the time history analysis provides. Uh using that I missed you analysis provides. Uh the the country of the response Uh the the country of the response spectrum analysis provides. spectrum analysis provides. Values signed values, however. Values signed values, however. We don't know if it's going to be We don't know if it's going to be in the positive or the negative. in the positive or the negative. So generally we use the same value that is So generally we use the same value that is provided whether it is negative or positive, provided whether it is negative or positive, but we combined with the. but we combined with the. We combine the static plus the positive We combine the static plus the positive value of the dynamic load or plus the value of the dynamic load or plus the negative value of the dynamic load. negative value of the dynamic load. OK so if we run the analysis. OK so if we run the analysis. We can go to the output file. We can go to the output file. And again the same results And again the same results are available there. OK. are available there. OK. The same type of results with The same type of results with the base maximum based here, the base maximum based here, you see here we had 22,000. you see here we had 22,000. More than 22,000. More than 22,000. Steps time steps so and again Steps time steps so and again the results if you check the. the results if you check the. And the post processing mode. And the post processing mode. Always check the dynamic load only then, On his check the dynamic load only then, the dynamic load so the the dynamic load so the displacements here are. displacements here are. Always the maximum value for each Always the maximum value for each node so maybe the maximum of this node so maybe the maximum of this node is occuring at time, 0.1. node is occuring at time, 0.1. And the maximum of this load is occuring On the maximum of this load is occuring at 0.5, so they are all reported, at 0.5, so they are all reported, but they're not just doesn't mean that but they are not. It doesn't, it doesn't mean that they are occurring at the same time so. they are occurring at the same time, so likewise if you have reactions. Likewise, if you have reactions. Under some of the reaction is exceeding. This is some of the reaction is exceeding. Is exceeding the applied load Is exceeding the applied load well it doesn't mean that you well it doesn't mean that you have to check if you want to see? have to check if you want to see? The total at one given time, The total at one given time, then you have to go to the. then you have to go to the. To the to the text file I've To the to the text file I've shown I've shown you before, shown I've shown you before, and check those results, and check those results, but it's time consuming. but it's time consuming. So the results one thing to keep So the results one thing to keep in mind is that the results in mind is that the results provided here are the maximum over. provided here are the maximum over. All times, All times, so and they are not all happening so and they are not all happening at the same time. at the same time, so the reactions. So the reactions. So I can see these are the maximum So I can see these are the maximum reactions happening at anytime. reactions happening at anytime. The beam results and for that reason The beam results and for that reason you may see some some some banding you may see some some some banding diagrams that are a little bit. diagrams that are a little bit. Bizarre. Bizarre becaus they do not represent Becaus they do not represent what what we know in static because the we know in static because the reason reason is because the values that are. is because the values that are. Reported by start of the maximum values Reported by start of the maximum values so start this calculating the results so studies calculating the results at the nodes of the degrees of freedom. at the nodes of the degrees of freedom. Where the masses are concentrated and Where the masses are concentrated and between those nodes it is interpolating between those nodes it is interpolating so by just drawing a line between the 2? so by just drawing a line between the 2? If you want to see some more accurate If you want to see some more accurate results and if you think this is results and if you think this is not not correct then you need to. correct then you need to add some. Add some additional nodes here OK. Additional nodes here OK. Specially, Specially, if you are using if you are using those results those results for the design, for the design, then you need to maybe you need to add some. then you need to maybe you need to add some additional nodes too. Additional nodes to make sure Make sure that the program, that the program, the interpolation is close to reality. the interpolation is close to reality. OK uh so this is what we have seen with OK uh so this is what we have seen with what the time step here is just to show you. what the time step here is just to show you. The The The Movement of The The The Movement of the structure the structure overtime, overtime, so you first need to so you first need to activate activate displacement diagram. the displacement diagram. And then you can see here T at 0 And then you can see here tear 0 seconds when you open this one. seconds when you open this one. It's a manual process so you need to go. It's a manual process so you need to go. Up up up. Up up up. And you will see the movement so And you will see the movement so provided that the scale is correct, provided that the scale is correct, so I guess we see something moving there. so not yes. We see something moving there. Maybe not that much, Maybe not that much, you can see here, you can see here, the movements. the movements. Let me check the displacements. Let me check the displacements. The maximum displacement are very small The maximum displacement are very small so it's just so if you modify the scale. so it's just so if you modify the scale. Did something wrong? Did something wrong? OK. So if I just divided by 10, OK. So if I just divide it my turn OK, then Displacement. OK, then Displacement. And time step. And then we can. And time step. And then we can. So you can see how it is moving So you can see how it is moving on side or the other side. So. on side or the other side. So. OK, or you can just. Grab the OK. Or you can just. Grab the cursor and then move the cursor. cursor and then move the cursor. So this gives you at any you can So this gives you at any you enter at any given time and you will can enter at any given time and you will have the displacement have the displacement shape at that. At that given time. shape at that at that given time. OK, so we have seen. OK, so we have seen. We have seen the 3rd and last example We have seen the 3rd and last example for this time history analysis, for this time history analysis, so it's now where we have so it's now where we have exceeded the hour that up so. exceeded the hour that up so. We can open now the ground for We can open now the ground for the questions you have a Q&A. the questions you have a Q&A. You have a Q&A a dialogue You have a Q&A a dialogue box probably have already. box probably have already. Ask some questions so yes, I see, Ask some questions so yes, I see, there are a number of questions there. there are a number of questions there. OK. So, which questions. OK. OK. So, which questions. OK. OK. Let me go through the questions. OK. Let me go through the questions. There is sound echo so this is just a remark, There is sound echo so this is just a remark, not a question so, not a question Sir so question so question clever does start pro. clever does start pro. Only use only small displacement theory. Only use only small displacement theory. Uh yes and not not only I mean, Uh yes and not not only I mean, this is in time history this is in time history in time history analysis. and time history analysis. Uh since it's a linear approach, Uh since it's a linear approach, it's also based on small displacements. it's also based on small displacements. Uh if you have large displacement then Uh if you have large displacement done a nonlinear approach because this a nonlinear approach because this will modify the stiffness matrix. will modify the stiffness matrix. Then the lonely and which we do not do we do, Then the lonely and which we do not do we do, we consider the same stiffness we consider the same stiffness matrix to Andy forms? matrix to Andy forms? Stiffness matrix so this is what I Stiffness matrix so this is what I meant by we use only small displacement meant by we use only small displacement theory for time history analysis. theory for time history analysis. In static analysis, The static analysis, we have nonlinear geometry geometric we have nonlinear geometry geometric nonlinear analysis, the general. nonlinear analysis, the general. Analysis, Analysis, which considers the large displacements, which considers the large displacements, we have large displacement we have large displacement for cable analysis. for cable analysis. So this is, but in time issue analysis. So this is, but in time issue analysis. It's only based on small displacements so. It's only based on small displacements so. Maybe the next question would be why. Maybe the next question would be why. When will be will we have? When will be will we have? And nonlinear analysis. And nonlinear analysis, It has been planned for uh it has been planned for for for implementation this year. implementation this year. Well, early this year, Well, early this year, I mean in the first health, I mean in the first health, but I think it has been postponed but I think it has been postponed to a later date. to a later date. But in all cases, But in all cases, it's in our plan to include the it's in our plan to include the nonlinear time history analysis, nonlinear time history analysis, so we don't have a precise date. so we don't have a precise date. Of its availability, Of its availability, but uh this is in our planet, but uh this is in our planet, just have been postponed. just have been postponed. And it's right now, And it's right now, it's in our plan with other analysis types. it's in our plan with other analysis types. But I cannot disclose those But I cannot disclose those information at this moment since information at this moment since it's not yet confirmed for me. it's not yet confirmed for me. So. Uh yes, I see this question So. Uh yes, I see this question has been answered by a colleague. has been answered by a colleague. Kuni applied time history loads Could be applied time history loads to 2D plates and shell elements. to 2D plates and shell elements? Uh it has been answered by Calidius Uh it has been answered by Calidius as long as it's applied to the nodes. as long as it's applied to the nodes. Then there is no problem. Uh. Then there is no problem. Uh. If working in SI unit with data in Mastics, If working in SI unit with data in Mastics, Yes, Mustax whether you work Yes, Mustax whether you work in years has been answered. in years has been answered. My colleagues so that's fine. My colleagues so that's fine. You have to convert manually. You have to convert manually. OK, so my my colleagues have OK, so Michael my colleagues have been very active. been very active. I see that much, I see that much, much of the questions have been answered. much of the questions have been answered. So why there is a lag in the video yes. So why there is a lag in the video's. Yes, this is a problem of speed, Yes, this is a problem of speed, so This is why in the first page. so This is why in the first page. In the first five in the first In the first five in the first screen that you have seen when you connected. screen that you have seen when Uh we, we advise to use you connected we advise to use. to use cable connection, To use cable connection, not Wi-Fi, not Wi-Fi with wise to stop any other. we advise to stop any other. Applications that are consuming Applications that are consuming your bandwidth to make sure that you your bandwidth to make sure that you have the application on 24 have have the the application on 24 have the full has the full bandwidth. the full has the full bandwidth. Uh can start also calculate Uh can start also calculate beam member and rotations. beam member and rotations. Um be member and rotations. Um be member and rotations. I haven't seen that I've I haven't seen that I've seen only displacement. seen only displacement. OK, I've seen it has been. OK, I've seen it has been. Answered by by Richard so. Answered by by Richard so. Yeah, so you can see that. Jeffrey. Yeah, so you can see that. Jeffrey. From ages can start From ages can start simulate the simulate the dynamic behavior dynamic behavior due to falling due to falling falling load size. falling loads so I see it has been. See it has been answered Answered by a colleague so yes. by a colleague so yes. The Random X edition is available The random expectation is available with the time history analysis, with the time history analysis, so it can be any any shape. so it can be any any shape. The load profile could be The load profile could be of of any of any shape and. any of any shape and can. OK can you use time history OK can you use time history analysis in start with plate analysis in start with plate element already answered? element already answered? OK, another question how to OK, another question how to implement impact load from object implement impact load from object traveling with define speed. traveling with define speed. Uh we don't have an explicit method, Uh we don't have an explicit method, then I think this has been then I think this has been answered by a colleague. answered by a colleague. Yeah, so it means that you will Yeah, so it means that you will need to manually calculate and need to manually calculate and replace these information by the replace this information by the only information that start pro. only information that start pro. Can understand which is the force? Can understand which is the force? Uh. Or an acceleration or a moment sorry. Uh. Or an acceleration or a moment sorry. So there's a question here can start So there's a question here can start regenerating exceedance curve for the beam. regenerating exceedance curve for the beam. She can we specify limiting member. She can we specify limiting member. And rotation value. And rotation value. Start to work out multiple Start to work out multiple combinations of load no. combinations of load no. No. Not at this moment, No. Not at this moment, not at this moment I will leave not at this moment I will leave this a question and answer it. this a question and answer it. I will check if this is another this I will check if this is another this moment but now we need to check with moment but we need to check with the with the product Management IV. the with the product Management IV. If there is a plan in the future developments If there is a plan in the future developments as I told you we plan to develop the. as I told you we plan to develop the. The direct integration. The direct integration. Uh to handle the nonlinear Uh to handle the nonlinear time history analysis, time history analysis, another type of types of analysis. another type of types of analysis. But I don't know I cannot confirm that But I don't know I cannot confirm that this is this is going to be there. this is this is going to be there. Is there any plan to allow the Is there any plan to allow the user to apply pressure loads to user to apply pressure loads to beam elements so here it is? beam elements so here it is? In our it is I would I wouldn't In our it is I would I wouldn't say it's in our plans. say it's in our plans. It is in our list of. It is in our list of. Wish list I I know that because I have Wish list I I know that because I have checked recently what was there a full checked recently what was there a full time history analysis and I've seen that. time Mister Analysis and I've seen that. Uh that that it was approved. Uh that that it was approved. Another question when will it be implemented? Another question when will it be implemented? It's uh? It's uh? It's something that's an information It's something that's an information that I don't have at this moment but. that I don't have at this moment but. Yes, definitely pressure and said Yes, definitely pressure answer this is required by users who this is required by users who are performing blast analysis, are performing blast analysis, so they need to apply. so they need to apply. A pressure on members. A pressure on members. OK. OK. Another Yes, another question yes. Another Yes, another question yes. OK so for those who have missed OK, so for those who have missed or who had a bad connection, or who had a bad connection. So this presentation is automatically so this presentation is automatically recorded and it will be available. recorded an it will be available probably by the end of the day. Probably by the end of the day. So you just need to reuse the same. So you just need to reuse the same. The same connection. 2. The same connection. 2. At the same link sorry to get At the same link sorry to get to that to that presentation. to that to that presentation. OK, another question on modeling OK, another question on modeling impact scenario, so this has been impact scenario, so this has been answered by my colleague's time answered by my colleague's time is 3 force versus time. Option. is 3 force versus time. Option. OK. OK. OK, so another one another OK, so another one another question about about the column question about about the column installed next to a railway track. installed next to a railway track. So. Probably this is a So. Probably this is a ground motion to be imposed. ground motion to be imposed. If there is a vibration, If there is a vibration, but uh. but uh when you have the profile of the load. When you have the profile of the load, Then it's easy to enter it then it's easy to enter it in start as a vibration, in start as a vibration, but To have this vibration profile, but To have this vibration profile, we don't have this method. we don't have this method. It instead but I see. It installed but I I see. I even in theory, I have no idea I even in theory, I have no idea of how to get of how to get this information. this information so there are So there are probably some probably some research of how to? research of how to? Convert this information of a train. Convert this information of a train. A moving. Moving. Next to to a structure how to Next to to a structure how to how to maybe by measuring maybe how to many by measuring maybe my measuring the acceleration my measuring the acceleration vibration close to that location vibration close to that location and then using this information, and then using this information, but I don't have this information but I don't have this information and it doesn't exist in Insta and it doesn't exist in Insta Dominion study just provide it's Dominion study just provide it's OK to provide the ground motion. OK to provide the ground motion. Buy a pair of acceleration versus time. Buy a pair of acceleration versus time. OK. OK. So a column is subjected to shocks how to So a column is subjected to shocks how to model this install the acceleration says. model this install the acceleration says. Again, so in start pro. Again, so in Star pro. It's uh it's it's the force. It's uh it's it's the force. I would say, but uh. I would say, but uh. But I would advise to see install it, But I would advise to see install it, you can only you can only you can you can only you can only you can only specify force versus time. only specify force versus time. I'm acceleration versus time or a moment I'm acceleration versus time or a moment versus time so the closest I see is a force, versus time so the closest I see is a force, but I'm not very. but I'm not very. Familiar with that type of analysis, Familiar with that type of analysis, so maybe there are some other so maybe there are some other parameters that that I may miss so. parameters that that I may miss so. I don't want to tell you. I don't want to tell you. Uh to direct you in a direction Uh to direct you in a direction in the wrong direction. in the wrong direction. I would say so. I would say so. I would advise you to to do some research I would advise you to to do some research on how this is handled and then how on how this is handled and then how to convert this instead as I told you. to convert this inside as I told you. You can only specify time versus. You can only specify time versus. Load versus false moments on or acceleration. Load versus false moments on or acceleration. OK, uh. I don't see more questions, OK, uh. I don't see more questions, so I answered the orally so I answered the orally to the questions so I will. to the questions so I will. I will write the answers so that I will write the answers so that they they remain there for those they they remain there for those who will come back and check those. who will come back and check those. Those uh those answers so I will do that, Those uh those answers so I will do that, after the after the session. after the after the session. OK uh if there are no more questions. OK uh if there are no more questions. I thank you very much for attending I thank you very much for attending I hope this was a useful. I hope this was a useful. Topic for you. Topic for you and again if you have And again if you have any question any question later you can just come later you can just come back back to this using the same link. to this using the same link. And ask your question there And ask your question there and and then we will answer your then we will answer your question question without any problem. without any problem. I will just I will just A wish I will just I will just A wish you a nice end of day and uh. you a nice end of day and uh. I hope to see you soon. I hope to see you soon. Well, in February, Well, in February, we have another session in February. we have another session in February. And uh that's all. And uh that's all. That's all I have for today That's all I have for today have a nice day. Bye. have a nice day. Bye. Hawaii modestas how are you? Good yeah, thank you. Thank you. I uh I hope I was, I wanted to ask you how was the voice? The email, the pictures the quality was it because you I saw your text your message and say my God, if they don't see anything. I'm lost. OK. OK. OK, OK OK. Oh. Maybe yeah, yeah, I saw you. Do you do you know how many people we had at the maximum? Wow. That was very good, yeah, so you see that the topic was interesting. OK, OK, yeah, OK good so I hope and I hope you will soon have. Did not linear time external this because this is uh? In fact, not the learning the direct integration will? Allow us to solve this kind of. Of equation for a stage construction for. The progressive collapse for a time history analysis, so it will be very, very useful to handle. Additional problems. Yeah. OK, OK, so how are you doing? There are you OK enjoy your time? OK. Good sunny. Who? OK, OK good. Look. Oh yes. Yes, yes, I've seen I've seen that. Yeah, yeah, yeah, so yes, this morning this morning. We heard that I think 7 died in Spain and in France know there's a whole village that was evacuated becaus. They they had the water coming in in their houses. Because the River or A River how how do you say flooded? Yeah. so? Yeah. No, not as in spaniel spend they had. They had in a very little time they had a lot of a lot of rain so. It happened, it happened a few months ago in in if you watch videos of Valencia rain. Yeah, there was a huge rain. It took cars, many, many 10s and 10s of cars were carried by the by the water. Yeah, so enjoy yourself how by the way how are you finding the last starred I'm happy didn't crash anytime? You see this is. Yeah.

This STAAD Special Interest Group virtual workshop is structured for users in EMEA and focuses on *Linear Time History Analysis*. Attendees will experience a review of possibilities for capturing the dynamic response of a structure subject to a time varying load. Topics also include:

- An introduction to Time History Analysis implementation
- Load profile and solution parameters
- Worked example

See you online!

***The webcast will be streamed through your computer, so there is no dial-in number. Please make sure your computer speakers (or headset) are turned on and the volume is set to an audible level so you can hear the presenters. #EVENTHELPURL#*