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Hi,
I am trying to model expanded polypropylene material and i am trying to figure out what material Id and property type we must use in optistruct.
Thanks
Hi Adithya,
What is the analysis about?
You can use MATX33, MATX70
Or use RADIOSS with LAW33, LAW 70
Hi, Thank you for your response.
It is a non linear quasi static analysis on the seat. I am using EPP material for the foam.
Hi @Adithya
I suggest you use RADIOSS for such a problem.
I need to further optimize the design, thats why i am modelling it with optistruct, right now, I tried converting from optistruct to radioss but i am missing 1d elements which were placed on the components. I am using the latest version of 2017.2
What type of Optimization are you planning to do?
RADIOSS does supports optimization starting from 2017. Please refer to this example problem of thickness optimization on a B-pillar
Its a composite material, and i would need to perform and try all the 3steps available in optistruct. Btw my analysis is taking very long time to run, this has been the case ever since i gave tie connection between a solid element and shell element, is there a more less time consuming way to solve this? because before having the solid elements and connections, it took lesser time to compute, will a 1D connection with rigid element solve the issue? Also i am not facing any issues in optistruct with the file, I am using NLGEOM as i have a foam material.
Is it possible to share the model file, please?
Please use the file transfer link in my signature to share the model file
Hi, I have attached the file in the file transfer link
Thank you.
I didn't receive any file at my end.
Hmm, that is strange. I have sent you the file again. Please check
@Adithya
I got the files. thank you
I see that you are running a linear static analysis.
Hi no, I am running a nonlinear geometric analysis.
OK, It is NLGEOM and I am running the file right now.
One way to increase the speed of the analysis is to use a coarser mesh instead of a finer mesh.
Hi Prakash
Oh great, Is it taking too long or did you get any results?
