Use of a combined isotropic non-linear kinematic hardening model to predict evolutionary cyclic stress-strain behaviour in an austenitic stainless steel

摘要

Evaluation of fatigue damage in components is com- monly carried out using power law deformation equa- tions to define stress and strain for the applied loading conditions. These equations are generally based on cyclically stabilised hysteresis loops defined for a particular strain range. Where loading conditions change or an assessment of a complex geometry is required, the component may be subject to a range of loading conditions and variations of strain range through the component thickness. In addition, some components are subjected to relatively few, but severe, loading cycles during their lifetimes.