This video explains modeling of separation of two parts by cohesive contacts. The simulation of the peeling test of a polymer layer on the steel substance is illustrated. Requesting the CSDMG which shows the degradation of the connected surface is shown. Definition of the cohesive behavior by cohesive contact in interaction module is completely explained. Damage initiation, evolution and stabilization in the contact zone are described. In this video you can also learn how to define a boundary condition in local coordinate system.