Comparison of plastic, viscoplastic, and creep models when modelling welding and stress relief heat treatment

摘要

A major concern when carrying out welding and heat treatment simulations is to accurately model material behaviour as it varies with temperature and composition. Early in the product development process, a less sophisticated material model may be suitable to compare different concepts where less accuracy in deformation and residual stress is acceptable. At later stages in the product development process, more sophisticated models may be used to obtain more accurate predictions of deformations and residual stresses. This paper presents a comparison of five different material models applied to the simulation of a combined welding and heat treatment process for a fabricated martensitic stainless steel component.