Building biaxial fatigue damage model of wheel rims based on multi-axial loads projection theory
Difficulties of damage equivalence and test accelerating in making load spectrums of fatigue test of wheel rims were concentrated in this paper.Systematic and comprehensive analysis of loads acting on wheel rims in real conditions was carried out for damage equivalence.Biaxial fatigue damage model of wheel rims was built,introducing multiaxial loads projection theory and concept,based on which method of making load spectrums of biaxial fatigue test and its acceleration of wheel rims were presented.About 5000 km time domain data of wheel forces were gathered on typical public roads.Equivalent biaxial fatigue damages of wheel rims were calculated using the presented method with the obtained data.The results highlighted the superiority of the method of biaxial fatigue test of wheel rims,and also exposed the limitation of uniaxial radial fatigue test and bending fatigue test of wheel rims.
万方数据
维普
