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Sticking slave nodes

Sticking slave nodes

Sticking slave nodes

(OP)
Hi!

I'm trying to simulate a model of a gasket(hyperelastic) and the aluminium (elastic) cover. The model have 4 bolt loads and 12 contact pairs. I,m running this problem with abaqus standard procedure.
I have no problem in estabilishing contact with all the parts, but in a step that increases the temperature of the part i have some problems of sticking slave nodes that causes non-convergence. I,m using the augmented lagragian contact method for the contact pressure-overclosure and the penalty method for the frictional (transversal) behaviour. I do not impose any frictional shear stress limit add i use the default elastic slipping (0.005). I know that greater values of elastic slip tolerance can improve the convergence of the contact algrithm.

Do you think this procedure is the only way to improve my model?

Thanks


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