A semi-smooth Newton method for orthotropic plasticity and frictional contact at finite strains
A novel combined FEM approach for contact and finite strain plasticity is developed. General isotropic hyperelasticity and orthotropic Hill plasticity are considered. All discrete inequalities are reformulated as semi-smooth complementarity functions. Efficient non-smooth versions of Newtons method handle all involved nonlinearities. The proposed semi-smooth Newton method is competitive to classical return mapping.
semi-smooth newton methods frictional contact finite strain plasticity anisotropic hill model mortar finite element methods nonlinear complementarity functions