A Novel Multiaxial High-Cycle Fatigue Life Prediction Model Based on Critical Plane-Intrinsic Damage Dissipation

The critical plane approach identifies the crack initiation plane and propagation directions, whereas intrinsic damage dissipation quantifies energy dissipation directly correlated with fatigue damage. This study proposes a multiaxial high-cycle fatigue (HCF) failure criterion and a life prediction model by combining both theories and explicitly incorporating mean stress effects. The proposed criterion employs four critical plane parameters: maximum shear stress, shear stress amplitude, maximum normal stress, and normal stress amplitude. This methodology demonstrates clear physical significance. Validation against experimental datasets demonstrates close agreement between model predictions and empirical results in both fatigue limit determination and life estimation. Comparative evaluations against classic and recent criteria reveal statistically superior predictive accuracy of the proposed criterion. The method shows its promising potential as a tool for multiaxial HCF engineering analysis.