Abstract

The effect of the plastic spin on the behavior of initially anisotropic materials is demonstrated by obtaining in closed analytical form the stress-strain response of orthotropic and transversely isotropic materials subjected to various kinds of homogeneous large inelastic deformations, at different rates and temperatures. The important issue is the evolution of the orientation of the anisotropic axes, which is based on the key aspect of the aspect of the constitutive relations for the plastic spin. In one case, the theoretical results show a remarkable qualitative similarity with experimental data from fixed-end torsion experiments. For other cases, physically plausible interpretations of the theory are discussed.

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