On multisurface and integral description of anisotropic hardening evolution of metals

摘要

A multisurface hardening model is modified in order to describe cyclic hardening phenomena occurring for proportional and non-proportional monotonic and cyclic loading. A complex interaction of cyclic loading histories can be described by using proper evolution rules for consecutive surfaces associated with specified hardening moduli. Next, the integral description of back stress evolution is considered with the memory of maximal prestress incorporated into the model. These two descriptions are applied to simulate the deformation response of stainless steel 316 for a variety of loading programmes and their predictions are compared.