Shear band localization via local J2 continuum damage mechanics

This work describes a novel formulation for the solution of problems involving shear band localization usisng a local isotropic J2 continuum damage model and mixed linear simplex (triangles and tetrahedra). A simple isotropic local J2 damage constitutive model is considered, either with linear or exponential softening. The softenning modulus is regularized according to the material mode II fracture energy and the element size. Numerical examples show that the formulation derived is fully stable and remarkably robust, totally free of volumetric locking and spurious oscillations of the pressure.