Thanks, I've been pretty quiet for 6 years now, but the pandemic has given me a little more time to start working on videos again and will start uploading soon. Just trying to come up with ideas!
Ok, first of all, this might be the best tutorial ever created in the history of mankind! Thank you for that! However, I also want to ask what the purpose of the partitioning is? Otherwise, it is a perfect match with my calculations/experiments, you are the man!!
YungusCH Thanks for the positive response! It's been so long ago since I made this video that I can't really remember what was happening in it, but I probably just partitioned it as it created points that I could either apply loads to, or export field/history outputs from.
Excellent Effort on dynamic analysis on a simple cantilever beam, so smooth and so effortlessly done. Thank you for the Conntent. I will be Subscribing to you for more.
Hey, in the video at 9:56 mark, you mention that your chose only first 2 modes as the system has DOF of 2. How and why you say this? The modal analysis shows you can have both vertical and lateral bending as well as torsion and extensions, which means atleast 4DOF. Can you please elaborate, thanks.
How can I add internal pressure to a pipe (simply supported) and then perform a steady state dynamic analysis under harmonic load? Should the internal pressure be added in a general static step or is it added in the dynamic analysis step? Thank you
Hello, I have a question with a modal analysis for two plates , one in aluminium the other in Natural Rubber , the analysis shows only the deformation of the Natural Rubber plate and not the Aluminium one, do you know why ?
Nice video! I was looking for how to apply amplitude in my modell. The only thing I'd like to complain is the that your monitor has too high resolution that the text are too small to see on my 1980x1080 monitor. The downside of high res. :(
Thanks for your sharing... I want to simulate a 3d beam under the resonance situation. I've done the Modal analyses and now I just want to shake the beam at its first resonance frequency. and then I want to see the free end displacement response to this vibration.thank you.
Please help I got this error when running the modal dynamic analysis .... ELEMENT OUTPUT ON EXTERIOR ELEMENTS HAS BEEN SPECIFIED. HOWEVER, THERE ARE NO ELEMENTS IN THE MODEL FOR WHICH THIS TYPE OF OUTPUT IS SUPPORTED. ELEMENT OUTPUT ON EXTERIOR ELEMENTS IS SUPPORTED ONLY FOR 3-D CONTINUUM ELEMENTS AND SHELL AND MEMBRANE ELEMENTS, EXCEPT AXISYMMETRIC SHELLS AND MEMBRANES. i followed the steps but it still ocurred !! please help! thanks
Can you explain how the Steady State Analysis works? You created a concentrated force, but how did Abaqus know that this force would be the sinusoidal force input for the transfer function? Or is it just the plot of the response?
Great tutorial! Unfortunately, I am getting the following error for the modal dynamic simulation; "Error in job Job-1: PRESELECTED OUTPUT REQUESTS ARE IGNORED IN SIM-BASED MODAL SUPERPOSITION PROCEDURES (EXCEPT COMPLEX EIGENVALUE EXTRACTION). YOU MUST ALWAYS SPECIFY OUTPUT REQUESTS TO THE OUTPUT DATABASE (.ODB) FILE; OTHERWISE, THE ANALYSIS WILL NOT BE PERFORMED. A USER ODB OR SIM OUTPUT REQUEST IS REQUIRED IN A SIM-BASED PROCEDURE." Do you know why this might be happening?
Hello. Thanks for the video. I just have a general question: if the frequency is cycles / time? What is the time value in the equation? We haven't defined it so far?
Can you do a similar analysis but having a vibrating device creating the vibration instead? Like a piezo actuator vibrating on a the beam vibrating the beam at the same time?
Hello, thanks for the tutorial, i was wondering how these three steps are interconnected? does the output from step2 affect the output of step3? In step3, why the displacement is not zero when the frequency is zero?
Thanks..If I would like step 3 to start at certain time step of the step two. would that be possible? can we make them all independent to each other by defining different loads and boundary conditions?
The reason there is an "initial" displacement at frequency = 0 is because of the applied load. If you calculate the static maximum displacement for a beam subjected to a load at the tip, this should be equal to the displacement at 0 Hz read from the requested plot in Abaqus. The SSD analysis is not dependent on the modal dynamics analysis, but both are dependent on the modal analysis (the frequency extraction step).
hi, thank you very much for this wonderful tutorial. I have a problems, I want to export the mode shape data of the surface grid point, how could I do that? Thank you very much
Thanks for the tutorial, this was exactly what I was looking for. However, I tried it with a similar system (yet slightly different) myself and the displacement instead of reaching a peak, switches sign. As a result, not only does this mess up the response by changing sign, but also the response does not reach its peak value. Any tips/suggestions on what may be causing this? Thanks!
No worries, figured it out on my own. The graph produced by default is the real component of the complex response (remember, magnitude and phase). If you want the complete steady state response either in complex or Euler (exponential) form, you can go to Results -> Options -> Complex and choose to view the variation of the real part, imaginary part, magnitude and phase with frequency (in Hz). Combining the data of the two corresponding graphs you have a complete frequency response
This is the best ABAQUS video I have seen till date. please make more such videos. well done.
It is a good tutorial, simple concise, and complete. Good job!!!
Great, simple and clear delivery. Thank You, Sir. Please make more videos on such simple geometries to help us grasp the concepts well.
Thanks, I've been pretty quiet for 6 years now, but the pandemic has given me a little more time to start working on videos again and will start uploading soon. Just trying to come up with ideas!
Ok, first of all, this might be the best tutorial ever created in the history of mankind! Thank you for that! However, I also want to ask what the purpose of the partitioning is? Otherwise, it is a perfect match with my calculations/experiments, you are the man!!
YungusCH Thanks for the positive response! It's been so long ago since I made this video that I can't really remember what was happening in it, but I probably just partitioned it as it created points that I could either apply loads to, or export field/history outputs from.
Excellent Effort on dynamic analysis on a simple cantilever beam, so smooth and so effortlessly done. Thank you for the Conntent. I will be Subscribing to you for more.
Hey, in the video at 9:56 mark, you mention that your chose only first 2 modes as the system has DOF of 2. How and why you say this? The modal analysis shows you can have both vertical and lateral bending as well as torsion and extensions, which means atleast 4DOF. Can you please elaborate, thanks.
How can I add internal pressure to a pipe (simply supported) and then perform a steady state dynamic analysis under harmonic load? Should the internal pressure be added in a general static step or is it added in the dynamic analysis step?
Thank you
Hello, I have a question with a modal analysis for two plates , one in aluminium the other in Natural Rubber , the analysis shows only the deformation of the Natural Rubber plate and not the Aluminium one, do you know why ?
Nice video! I was looking for how to apply amplitude in my modell.
The only thing I'd like to complain is the that your monitor has too high resolution that the text are too small to see on my 1980x1080 monitor. The downside of high res. :(
I agree! Bad resolution
Wow....this is best tutorial. Keep going..all the best
Thanks for your sharing... I want to simulate a 3d beam under the resonance situation. I've done the Modal analyses and now I just want to shake the beam at its first resonance frequency. and then I want to see the free end displacement response to this vibration.thank you.
hey good video.. how can i apply a displacement boundary condition of 1mm (sinusoidal)..?
Hallo, Can i ask why you put 333 in Amplitude? and why the time just end with 0.004 instead of 0.05? Thanks a lot!
Why I don't have the "Complex Frequency" or "Modal Dynamics" options? I'm using 6.13
Thank you a lot for the tutorial. Very well explained.
I still have one question: why did you partionate the beam in the middle? What's that for?
Please help I got this error when running the modal dynamic analysis ....
ELEMENT OUTPUT ON EXTERIOR ELEMENTS HAS BEEN SPECIFIED. HOWEVER, THERE ARE NO ELEMENTS IN THE MODEL FOR WHICH THIS TYPE OF OUTPUT IS SUPPORTED. ELEMENT OUTPUT ON EXTERIOR ELEMENTS IS SUPPORTED ONLY FOR 3-D CONTINUUM ELEMENTS AND SHELL AND MEMBRANE ELEMENTS, EXCEPT AXISYMMETRIC SHELLS AND MEMBRANES.
i followed the steps but it still ocurred !! please help! thanks
So many thanks to you Mr. landoflemond!
Can you explain how the Steady State Analysis works? You created a concentrated force, but how did Abaqus know that this force would be the sinusoidal force input for the transfer function? Or is it just the plot of the response?
Great tutorial! Unfortunately, I am getting the following error for the modal dynamic simulation;
"Error in job Job-1: PRESELECTED OUTPUT REQUESTS ARE IGNORED IN SIM-BASED MODAL SUPERPOSITION PROCEDURES (EXCEPT COMPLEX EIGENVALUE EXTRACTION). YOU MUST ALWAYS SPECIFY OUTPUT REQUESTS TO THE OUTPUT DATABASE (.ODB) FILE; OTHERWISE, THE ANALYSIS WILL NOT BE PERFORMED. A USER ODB OR SIM OUTPUT REQUEST IS REQUIRED IN A SIM-BASED PROCEDURE."
Do you know why this might be happening?
I also faced this problem. Have you got the solution yet?
Hello. Thanks for the video. I just have a general question: if the frequency is cycles / time? What is the time value in the equation? We haven't defined it so far?
You saved my thesis
That's the nicest thing I've heard this week! Best of luck
Can you do a similar analysis but having a vibrating device creating the vibration instead? Like a piezo actuator vibrating on a the beam vibrating the beam at the same time?
how to calculate mass proportional damping and stiffness proportional damping for abaqus ??
Nice tutorial! could you do a tutorial video for dynamic implicit step too please? thanks !
Nice explanation. Is it possible to simulate for composite beam?
How to find the modal mass and stiffness related to the model?
Is this
1. Modal
2.Transient
3. Harmonic analysis?
???
thank you so much for your video. but i have a question
how can i do response spectrum analysis in abaqus? i m very grateful if could helping me.
had you perform Response Spectrum Analysis ?
Hello, thanks for the tutorial, i was wondering how these three steps are interconnected? does the output from step2 affect the output of step3? In step3, why the displacement is not zero when the frequency is zero?
I do believe that step 3 will carry on from where step 2 ended.
Thanks..If I would like step 3 to start at certain time step of the step two. would that be possible? can we make them all independent to each other by defining different loads and boundary conditions?
The reason there is an "initial" displacement at frequency = 0 is because of the applied load. If you calculate the static maximum displacement for a beam subjected to a load at the tip, this should be equal to the displacement at 0 Hz read from the requested plot in Abaqus.
The SSD analysis is not dependent on the modal dynamics analysis, but both are dependent on the modal analysis (the frequency extraction step).
hi, thank you very much for this wonderful tutorial. I have a problems, I want to export the mode shape data of the surface grid point, how could I do that? Thank you very much
Hi, thanks for your sharing. How can I export mode shapes (eigenvectors)?
Thanks for the tutorial, this was exactly what I was looking for. However, I tried it with a similar system (yet slightly different) myself and the displacement instead of reaching a peak, switches sign. As a result, not only does this mess up the response by changing sign, but also the response does not reach its peak value. Any tips/suggestions on what may be causing this? Thanks!
No worries, figured it out on my own. The graph produced by default is the real component of the complex response (remember, magnitude and phase). If you want the complete steady state response either in complex or Euler (exponential) form, you can go to Results -> Options -> Complex and choose to view the variation of the real part, imaginary part, magnitude and phase with frequency (in Hz). Combining the data of the two corresponding graphs you have a complete frequency response
@@panagiotisgeorgopoulos9874 I know this is a very old comment but here goes. Can you explain this a bit further? What do you mean by combining?
pls upload soil structure interaction tutorial for earthquake loading
How to get phase angle of displacement?
Thank you a lot for the tutorial. Very well explained.
without drawing the model itself ,how can we draw the model by importing coordinates?can u make a video plsss
Thanks for the idea, I'm looking for ideas to make new videos, so I will take a look at this for you
how can i do modal analysis of chassis in abaqus
just like first section of this example, only your creation of chassis is different.
how we can give rebar in beam element
Very well explained.
Thanks for the upload..
You're a legend!
thank you helped me alot :)
thank you very much
Thanks a lot
thank you!!
lol.
Thank you.....