A class of thermo-hyperelastic–viscoplastic models for porous materials: theory and numerics

Modelling and numerical issues in conjunction with large strain analysis of thermohyperelastic–viscoplastic models are discussed with emphasis placed on porous materials (metal powders). In order to account for the proper temperature effect on the rate-dependent response of metal powders, the concept of “viscoplastic admissibility” is employed as part of a model framework that includes a dynamic yield surface. A generic class of...