Thermoplastic Analysis Using the Finite Element Code AGGIE I

摘要

The authors have previously proposed a theoretical model for predicting structural response of elastic-plastic-creep materials subjected to variable temperature loadings. This model utilizes the combined isotropic-kinematic hardening rule in conjunction with the classical rate independent plasticity theory. The resulting constitutive law has been implemented into the finite strain finite element code AGGIE I. The authors have found it necessary to alter the formulation previously presented in order to obtain a concise numerical formulation. That modification is presented in this paper. In addition, a section is included which outlines supplementary information necessary for computer program input, followed by a computational procedure which is intended to aid programmers who wish to use this model. Finally, the results of several sample cases are presented. (Author)