Finite element simulation of ductile fracture in polycrystalline materials using a regularized porous crystal plasticity model

Abstract In the present study, a hypoelastic–plastic formulation of porous crystal plasticity with regularized version Schmid’s law is proposed. The equation describing effect voids on modified to allow for an explicit analytical solution effective resolved shear stress. model implemented as material in finite element code using cutting plane algorithm. Fracture described by erosion at critical porosity. proposed used two test cases two- and three-dimensional polycrystals deformed tension until full fracture achieved. simulations demonstrate capability account interaction between different modes strain localization, such bands necking, initiation propagation ductile large scale polycrystal models detailed grain description realistic boundary conditions.