Dear Simulate Users,
I often detect a problem when I use "contact" interfaces. The surfaces (under the interface) are in slippage with each other. The contact is OK for some timesteps but the surfaces start to overlap after a certain displacement. See the pictures:
In the last step, the full overlapping is one cell thickness which is very important in terms of the investigated process.
How can I avoid this error? (I think, the time step size and the mesh size is OK)
I changed the mesh from fully structured hexa to unstructured hexa (like in your model). Based on results, the interface is ok, there is no overlapping. I think, my structured haxe mesh included too large size ratio between elements.