Hi All,
I am wondering if somebody can answer my question. I use Abaqus to simulate the contact problem.
It is simple problem (Berkovich indentation, rigid indenter). I found that when the mesh is too fine, the
simulation is hard to converge. I use UMAT to model my material. The UMAT has been verified. When
the element size becomes large, the simulation converges very quick. Who can help me to explain this?
Thanks.
Kai
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