Abstract
The subloading surface model has been formulated and applied to the prediction of cyclic loading behavior of metals. This article presents a formulation of the stress-update algorithm for the extended subloading surface model. The stress-update algorithm by the return mapping using the fully implicit algorithm is formulated aiming at obtaining calculation results in high accuracy and efficiency. It is incorporated into the implicit finite element program Abaqus through the User-subroutine UMAT. We simulate elastoplastic behaviors of metal to assess calculation accuracy and efficiency of the proposed algorithm.
