Twin-Shear Slip-Line Field for Plane Strain Problem

Abstract

The twin-shear slip line field theory for plane strain problems based on the twin-shear yield function is described in this chapter. The twin-shear slip line field theory for plane strain problems includes orthogonal and non-orthogonal slip line field. It is different from the used orthogonal or non-orthogonal slip line field theories based on single-shear strength theories (Tresca and Mohr-Coulomb materials). The new method can reflect the effect of intermediate principal stress of plane strain, where the intermediate principal stress is the principal stress in z direction.