,just one more thing. For example I am not concerned about the contact stresses occurring on the contact faces between two bodies, then increasing the convergence tolerance or decreasing the contact normal stiffness (where both the options will have a larger penetration), so still that would be a problem? I mean where can the results become kind of ''less accurate'' by applying these two measures? I mean the force transfer happening between the two bodies still won't change right? So by applying the St. Venant's principle, I can easily depend on the results far away from the contact and they will still be ''accurate'', right?
Plus, what is the program controlled default value for the penetration tolerance?