I am running a Nonlinear study and I have three parts moving and making contact with each other. During the sliding of one component over another I get an error, 'improper contact surfaces for a contact area'. Does anyone know what it means and how to solve it. I have tried different mesh densities, contact types (surface to surface, node to surface), and changing from fixed to automatic time steps, etc. No difference. My materials are set at Plasticity - von-mises. I have also tried playing with increasing the Tangent Modulus, but to no effect.
Any help greatly appreciated.