一种新能源铝合金车轮双轴疲劳分析方法研究

luminum alloy have the advantages of lightweight and high strength, and have been widely used in new energy vehicle wheels. In operation, complex load environments often lead to early fatigue failure. The traditional single axis fatigue testing method is no longer able to meet the requirements of complex multi-axis working conditions. In respA novel dual axis fatigue analysis method for aluminum alloy wheels of new energy vehicleonse to the current problems, this paper proposes a novel biaxial fatigue analysis method for aluminum alloy wheel of new energy. After obtaining the S-N curves of the wheels before and after pre damage deformation through experiments, finite element analysis (FEA) technology is used to predict the fatigue life of aluminum alloy wheels, combined with the Fatemi Socie model and Smith Watson Topper (SWT) criterion, and biaxial fatigue tests are conducted to verify the influence of tire flatness on the fatigue life of wheels. The results are shown that the fatigue life of 0.5% pre damage deformation wheels is lower than that of wheels without pre damage deformation; The lower the flatness of the tire, the higher the requirement for wheel fatigue strength.