汽车钢板弹簧在不同摩擦系数下疲劳寿命研究  

Fatigue Reliability Analysis of Automobile Armor Plate Spring Considering Different Friction Coefficients

作　　者：闫彩伟 叶南海[1] 王利[1] 侯飞[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

出　　处：《计算机仿真》2014年第12期147-150,共4页Computer Simulation

基　　金：国家自然科学基金资助(51375154)

摘　　要：在钢板弹簧的结构设计中,疲劳寿命是评价其可靠性的重要指标。为了更准确地预估钢板弹簧的疲劳寿命,利用ANSYS的非线性求解模块,建立了某载货汽车钢板弹簧的有限元模型,考虑到簧片间接触摩擦因素,首先分析了不同摩擦系数下板簧的等效应力;考虑到应力与疲劳寿命之间的关系,用Fatigue软件进一步分析摩擦系数对疲劳寿命的影响,并通过试验验证了分析结果的可信性。结果表明,随着摩擦系数的增大,钢板弹簧的等效应力降低,疲劳寿命增大。In the structure design of armor leaf spring, the fatigue life is an important index of reliability evalua- tion. In order to accurately estimate the fatigue life more, the finite element model of armor leaf spring was established based on nonlinear solution module of ANSYS. And firstly,the equivalent stresses under different friction coefficients were analyzed. Considering the relationship between stress and fatigue life, the influence of the friction coefficient to fatigue life was further analyzed with Fatigue. The credibility of analysis result was verified with experiment. The re- sult shows that with the increase of friction coefficient, the equivalent stress of armor plate spring reduces, and the fa- tigue fife increases.

关 键 词：钢板弹簧 有限元分析 摩擦系数 疲劳寿命 

分 类 号：TH128[机械工程—机械设计及理论]