Nonlinear time‐varying fatigue reliability analysis based on the improved toughness exhaustion model

The state function based on fatigue accumulation model has a great influence on accuracy of fatigue reliability analysis of components. A nonlinear fatigue accumulation model considering the interaction of loads is proposed in this paper. The square ratio of front and back loads is presented as a new load interaction factor and embedded into the conventional toughness exhaustion model; thus, this improved model can reflect the load sequence and...