Abstract:A method for load spectrum compilation suitable for the fatigue reliability analysis of nonlinear leaf springs with varying stiffness was presented.A finite element model for leaf springs with consideration of the nonlinear contact was established with the software ANSYS.The model parameters were identified by using bench test method.Based on the model,the nonlinear relation between stress and deformation at any point was obtained.The arc height signal of the leaf assembly installed in a car running on intensified road was obtained by measuring and processing its acceleration signal. Based on the relation between stress and deformation signals,the accurate stress spectrum of hot spots was calculated.A fatigue reliability analysis using the compiled load spectrum counted by rain-flow counting method was carried out and the results coincide well with those in road test.
韩为铎,卢剑伟,莫家奇. 非线性渐变刚度钢板弹簧疲劳分析载荷谱编制方法[J]. 振动与冲击, 2017, 36(6): 241-245.
HAN Weiduo,LU Jianwei,MO Jiaqi. Load spectrum compilation method for the fatigue analysis of leaf springs with nonlinear varying stiffness. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(6): 241-245.
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