Implementation of an algorithm for general material behavior of steel taking interaction between plasticity and transformation-induced plasticity into account

摘要

In this article a semi-implicit algorithm (predictor-corrector approach) for incorporating the interaction between plasticity and transformation-induced plasticity (TRIP) in steel is developed. Contrary to the usual elasto-plasticity, the underlying model of material behavior of steel is far more complex. The interaction between plasticity and TRIP requires extensions of algorithms developed in Doghri (Int. J. Numer. Meth. Engng 1993; 36:3915-3932) and in Mahnken (Commun. Numer. Meth. Engng 1999; 15:745-754). A particular feature of the algorithm is that the inner iteration can be reduced to a single scalar equation. Numerical examples illustrate the algorithm's capabilities.