Stochastic modelling of low-cycle fatigue damage in 316L stainless steel under variable multiaxial loading

摘要

In the present study, a stochastic model is developed for the low-cycle fatigue life prediction and reliability assessment of 316L stainless steel under variable multiaxial loading. In the proposed model, fatigue phenomenon is considered as a Markov process, and damage vector and reliability are defined on every plane. Any low-cycle fatigue damage evaluating method can be included in the proposed mode. The model enables calculation of statistical reliability and crack initiation direction under variable multiaxial loading, which are generally not available.