Load spectrum compilation method for the fatigue analysis of leaf springs with nonlinear varying stiffness

被引：0
|
作者：
Han W. [1 ]
Lu J. [1 ]
Mo J. [1 ]
机构：
[1] School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei
来源：
Lu, Jianwei | 1600年 / Chinese Vibration Engineering Society卷 / 36期
关键词：
Fatigue reliability; Leaf spring; Load spectrum compilation; Varying stiffness;
D O I：
10.13465/j.cnki.jvs.2017.06.038
中图分类号：
学科分类号：
摘要：
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. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：241 / 245and252
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