Generalized probabilistic model allowing for various fatigue damage variables

Abstract This paper proposes a generalization of the Castillo and Fernandez-Canteli probabilistic fatigue model and shows how most fatigue models can be obtained as particular cases. Models that include mean-stress effects and multiaxial loading conditions are considered as examples of this general framework. Several fatigue damage parameters such as the Smith-Watson-Topper, the Walker-like strain, energy-based parameter in uniaxial and multiaxial loading conditions, and multiaxial critical plane parameters are proposed as reference parameters for the probabilistic model. It is shown that the Castillo & Fernandez-Canteli probabilistic approach can be successfully extended to these advanced fatigue models.

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