关键词: 汽车轮毂；疲劳寿命；强度分析；仿真分析

Abstract: As an indispensable and important component in car operation, the reliability of car wheels will directly affect the driving safety of the car. The article uses Performance Requirements and Test Methods for Passenger Car Wheels (GB/T 5534－2015) combined with simulation to conduct static analysis and fatigue life prediction on the 18×10J wheel hub of a certain vehicle model. The dynamic load is decomposed into static load, and multiple load sequences are use to simulate one cycle of wheel fatigue bending test. The minimum fatigue life of the wheel hub is found to be 1.78 × 106 times, which is much greater than the minimum cycle number of aluminum alloy material strengthening coefficient 1.6. It is found that there is a stress concentration area at the hub nut seat, resulting in a shorter lifespan in this area, but it meets the current design requirements. Optimization design can be carried out in future hub optimizations.

Key words: automotive wheel hub; fatigue life; strength analysis; simulation analysis