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Post Displacement Larger Than Length of Post
Posted Jul 9, 2024, 2:30 p.m. EDT Structural Mechanics, Material Models, Structural Dynamics 1 Reply
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Hey y'all!
I've been working with a beam I designed in COMSOL and I have been applying some lateral forces to it to measure the amount of deformation in the beam. I am expecting a linear relationship similar to Hooke's Law for reasonable values, and also expect that the deflections will max out at very high forces.
However, when I use very high forces, I get extremely high deflections which do not make sense. For example, after applying 1000 micronewtons of force, I get a deflection larger than the size of my post which does not make sense. Can someone explain why this is the case?
Thank you!
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You are probably not including non-linear geometry, so 1 N will just give you 1000x more deflection than 1 uN, as everything scales linearly. Otherwise, upload your case.
-------------------René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com