Constitutive equations for cyclic plasticity of Waspaloy (Q1371470)

An approach is suggested which takes into account the evolution of isotropic and kinematic hardening during cyclic loading. An internal variable is introduced to describe the effect of the starting of the second phase shearing processes during the first cycles. The ONERA/LMT kinematic hardening rule is extended in order to appropriately describe the softening phenomenon observed in almost all cases of applied loadings after cyclic stabilization. The resulting model is employed to simulate the mechanical behaviour of such materials under a proportional cyclic loading path.