Consideration of cyclic hardening and residual stresses in fatigue life calculations with the local strain approach

摘要

The local strain approach (LSA) is an established concept to calculate the fatigue life of mechanical components for failure criterion crack initiation in several fields of engineering. In an elastic static finite element simulation, the critical stress state is detected and forms the basis for an elastic-plastic fatigue calculation with the LSA in a post-processing routine. This paper introduces extension options of the LSA to consider the influences of forming processes on the fatigue life of components.