Delamination initiation and propagation, and being able to predict how delaminated regions affect the response of a composite laminate, are important design considerations. In COMSOL Multiphysics, this can be modeled using the Delamination node in the Layered Shell interface. There are several different displacement and energy based cohesive zone models available, as well as different traction-separation laws. It is also possible to model contact between delaminated layers.