Hi again.

I need to evaluate the stress concentration in a shaft´s keyseat.

The solver runs with a standard mesh:

However I need accuracy, so I refined the mesh on the keyseat but a problem came up.

"Number of target sub-surfaces per element > 1000 "

I defined the general contact as non penetrating and the local contacts between the faces of the key and keyset and cube as non penetrating too.

Has anyone dealed with this? I searched in the forum but I´ve found nothing.