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Fatigue life prediction formula proposed by Fatemi-Socie has been implemented into the fatigue analysis software - ENDURE to account for the multiaxial, out-of-phase fatigue loading conditions. Shear strain amplitude on the maximum shear strain amplitude plane and the maximum stress normal to this plane are the parameters governing such fatigue damage. This approach is compatible with the Coffin-Manson law and can be easily incorporated with the uniaxial fatigue data and finite element stress analysis to perform multiaxial fatigue life predictions. The predicted lives show good agreements with the experimental results of thin-walled tubular and notched shaft specimens of Inconel 718 and 1045-HR steel.

The stabilizer bar attachments problem can not be simply analyzed by using linear FEA methodology. The large deformation in the bushing, the elastic-plastic material property in the bushing retainer bracket, and the contact between different parts all add complexity to the problem and result in the need for an analysis method using a non-linear code, such as ABAQUS. The material properties of the bushing were experimentally determined and applied to the CAE model. It was found that using strains to estimate the fatigue life was more accurate and reliable than using stress. Many modeling techniques used in this analysis were able to improve analysis efficiency.