By incorporating both mechanical loading conditions and material-specific hardening responses, this factor enables a more comprehensive representation of the fatigue damage mechanism, which is defined as (22) μ = 1 + σ n , max σ y 1 + α Under multiaxial loading, materials exhibit a clear trend of fatigue life reduction as the phase difference between stress components increases [ 41 ].
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A Multiaxial Fatigue Life Prediction Approach Accounting for Additional Strengthening Effect Based on Energy-Critical Plane Model.
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