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Ah ok cool, so how should i fix this? Should i start with the roller at some clearance from the testpiece?

Hi Dan, It usually goes through a few increments, but there has been times when it stops after the first one. I'm not taking any temperature into account at all, this was meant to be a very basic model to give a general idea of the test before going into more detail....but it's turned out not...

I have only been using Abaqus for a few months and need to simulate a contact problem where a normal load is applied to a long thin test-piece using a hemispherical roller. The problem includes friction in the analysis and is being modelled as quasi-static loading. I have looked at several...