July 1, 2022 at 6:44 amjulius.langenhorstSubscriber
I'm looking at a simply-supported circular Euler-Bernoulli beam. I want to find out the response of the beam to a constant acceleration in the range up to 2000 Hz and plot the result in a acceleration vs. frequency plot.
How do I extract the acceleration after doing the analysis? And how would I then plot it?
Here's a snippet of my code:
! Build model
! Modal analysis
! Response Spectrum analysis
Thanks for your answers.
July 1, 2022 at 6:00 pmDaniel ShawAnsys Employee
A Response Spectrum Analysis (RSA) does not calculate the response at a particular frequency. It calculates the peak response over the frequency range. When you enter the command /INPUT,,mcom; you read the file.mcom file that contains load case commands that combine the modal resultls. You should do a harmonic analysis (probably a mode-supe harmonic) to calculate the response vs frequency.
July 2, 2022 at 1:17 pmjulius.langenhorstSubscriber
Thanks for your answer.
I used mode-superposition harmonic analysis and I now got a beautiful displacement vs. frequency plot. But to plot acceleration vs. frequency I want to multiply the displacement with its corresponding frequency. The nodal information is stored in a variable using NSOL,2,12,U,Y. I could create an array parameter for the frequency but I have not found a way to combine those two. How do I do this?
EDIT: I think I found the solution by using FILLDATA to fill variables
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