Abstract: A viscoplastic constitutive model characterization is presented for the small strain, nonisothermal behavior of a 9Cr-1Mo-V-Nb pressure vessel steel between 25°C and 600°C. A framework ...

Abstract: A procedure for determining parameters for anisotropic forms of nonlinear kinematic hardening rules for cyclic plasticity or viscoplasticity models is described. An earlier reported methodology for ...

Abstract: Two surface theories for rate-independent plasticity have previously been shown to offer superior correlative capability in modeling material response under non-proportional loading. In this study, ...

Abstract: Motivated by the strong dependence of strain-hardening processes on slip system activity, a slip system hardening formulation that explicitly employs accumulated slip system shear strains and net ...