Some considerations in the endochronic description of anisotropic hardening

Experimental results of Aris Phillips and his co-workers show that both distortion and motion of yield surface are path dependent. These phenomena are attributed to the path-dependent rate of strain-hardening for initially isotropic metallic materials. A version of endochronic theory is shown to describe this effect. Theoretical results are compared with the experimental data. This approach is further demonstrated to lead to improvement in the description of the Bauschinger effect.