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Refining mesh leads to non-physical results

Posted 24 mars 2016, 23:16 UTC−4 0 Replies

Lucas Encarnacao
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Hi, I'm new to COMSOL and am trying to do a relatively simple analysis of a sphere indenting into a cylindrical plane. I tweaked this model (www.comsol.com/model/cylinder-roller-contact-1431) and made it 2D axisymmetrical so it suited my model. I'm applying a point load to the top of the sphere and am trying to measure the maximum indentation depth. It runs with a coarse mesh (max element size ~10 nm) but any attempt to refine the mesh results in a non-physical result where the solver solves immediately on the first iteration and the sphere buries itself halfway through the plane.

I've attached the model I'm using if that helps.

I would just use the coarser mesh but I need a finer mesh if I am to publish the results because I need the highest accuracy possible. Any help is greatly appreciated! Thanks

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0 Replies Last Post 24 mars 2016, 23:16 UTC−4
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