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Nonlinear Contact Analysis

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I'm revisiting my analysis from my discussion "Large Deformation FEA". Though I received a lot of useful info, I'm still struggling to get accurate results.

 

Attached is the file I'm analyzing as a contact analysis assembly.

 

This screenshot captures most of the details (mapped mesh constraints, contact surfaces, total load at point, symmetry, displacement):

piecewise1.PNG

It also shows that this test failed with my given material properties. It will run with other material properties, but I haven't gotten anything close to real results.

 

Also, when I run this analysis, I get odd results and it's still taking my computer a while to solve this with mapped mesh and only one part with nonlinear material properties:

 

piecewise.PNG

I assume it's because my contact point at the top is sharp that it sees a little interference and then overcompensates.

 

Have you all seen issues like this?

 

Any suggestions would be greatly appreciated.

 

Thanks!


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