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Calculate circumference of a deformed structure
Posted 22 feb 2022, 09:08 GMT-5 Structural & Acoustics Version 5.6 4 Replies
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In short, I want to calculate the circumference of a deformed structure (i.e., static deformation in solid mechanics). I have found a post in the forum (https://cn.comsol.com/forum/thread/14096/measuring-circumference-of-deformed-ring).
However, I calculate circumference using nonlocal couplings - integration with material frame, and I got a value which is apparently the undeformed circumference. I also evaluate the material coordinates (X, Y, Z) and the spatial coordinates (x, y, z), and found they have the same value.
I also tried the exact file in the above mentioned post (Block_test.mph). But I got the same value no matter using material frame or spatial frame.
Any suggestion about this?
Thanks
Ryan
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Okay. I guess I just needs to enable geometric nonlinearity.
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Also look at https://doc.comsol.com/5.5/doc/com.comsol.help.comsol/comsol_ref_deformedmeshes.25.05.html
-------------------René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com
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Wait... the nonlocal couplings doesn't work with frequency domain analysis! Any suggestion?
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I think you need to state your problem better. Are you doing static or frequency domain analysis? You can have non-linear geometry in the former. It is not that non-local couplings don't work in the frequency domain, it is your use of them, as I see it.
-------------------René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com