ON SHEAR-BAND FORMATION .2. SIMULATION USING FINITE-ELEMENT METHOD

A dual yield constitutive model involving both the J2-flow and a thres hold-shear-stress based flow, described in the accompanying article, i s incorporated in a finite element program, and a simulation of shear band localization occurring in a uniaxially loaded plane strain specim en is carried out. The FEM takes into account the finite strains and t he rotations involved in the formation of the shear band. These numeri cal experiments not only validate the postulated constitutive equation , but also aid in investigating the effect of the material hardening e xponent, the aspect ratio of the specimen, and the mesh morphology on the formation of the shear band.