Analysis and Evaluation of Impact Reliability for Automotive Wheel Hub Based on Load Spectrum

Based on the road load spectrum, the vulnerable parts of the automobile wheel hub are analyzed for load characteristics and their fatigue life is predicted under actual service conditions, which provides a basis for the subsequent determination of model parameters. Considering the possible impact failure of the automobile wheel hub in service, a time-varying failure threshold model is established, and the model parameters are determined based on the actual physical significance. Then, the impact reliability model of the wheel hub is established, and the remaining model parameters are estimated by the great likelihood estimation method.