1. Institute of Engineering Mechanics, Nanchang University, Nanchang 330029, P.R.China;2. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Universi ty, Shanghai 200072, P.R.China
Abstract:
In this paper, the theory of materials with elastic range by Lucchesi and Podio-Guidugli (1988) has been generalized. It has also shown that there are some difficulties on the definition of back stress as the “center” of the yield surface in the Cauchy space. The back stress tensor is Lagrangian, and must be defined in the Lagrangian stress space.