On the effect of plastic spin on large strain elastic-plastic torsion of solid bars

The plastic spin has recently been identified as a key concept in the macroscopic description of large deformation plasticity for the treatment of anisotropic hardening. A class of combined isotropic-kinematic hardening models is formulated here, which includes two alternative constitutive equations for the plastic spin. The various sets of constitutive equations are used to analyze the large strain torsion of solid circular bars with either …