If you are using a pin to model the analysis you should define the interaction between the pin and the other contact, but if you just defined the pressure applying from the pin to the contact , you should use nonelinear solver.
and make sure that your model doesn't revolve ( check your BC's)
POOYA
I have created a symmetric 2D model and want to use the "SYMMETRIC MODEL GENERATION" to transfer is to 3D model,I read all the documentation but I can't do it yet.
the problem is that , this option is not supported in a model defined in terms of assembly of instances or parts.I also heard that I...