Hello there,

I have developed some UMATs code for composite materials in ABAQUS and checked all of them using ONE element. So I was pretty sure that all the UMATs work well, hence recently I tried to apply them on a model with multiple elements (more than one element), but they did not work. I checked the codes line by line and for one element the results are as expected. It would be really appreciated if you let me have your tips on the problem.

Thanks,

Hadi

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