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An approach based on refined critical plane methodology to fretting fatigue lifetime prediction for structures was proposed. A new shear stress-strain interaction (SSI) critical plane equation is developed, predicated on shear strain energy for predicting fretting fatigue lifetime. In order to obtain the fretting fatigue lifetime quickly and intelligently, the SSI critical plane method intelligent prediction software was developed using the Newton-Raphson iteration method. To corroborate the utility of the SSI critical plane method, we conducted a fretting fatigue lifetime test and then compared the calculated results of the SSI fretting fatigue lifetime prediction and traditional SWT prediction with the experimental values. The results indicate that SSI fretting fatigue lifetime prediction is closer to the experimental results than SWT.

Critical Plane Methodology for Intelligent Prediction of Fretting Fatigue Lifetime based on Shear Strain Dynamics