汽车自调臂矩形离合弹簧有限元疲劳分析  

The Finite Element Fatigue Analysis of the Rectangular Clutch Spring of Automatic Slack Adjuster

作　　者：罗哉[1] 徐陈杰 胡晓峰[1] 江文松[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018

出　　处：《机械设计与制造》2014年第10期46-48,52,共4页Machinery Design & Manufacture

基　　金：国家质检总局公益性行业科研专项项目(201310284);浙江省公益性技术应用研究计划(2014C31105)

摘　　要：汽车自调臂单向离合器中的矩形离合弹簧的疲劳失效,直接关系到自调臂的工作寿命。根据自调臂的工作原理,建立自调臂矩形离合弹簧的机械结构力学模型,并将该结构力学模型导入到ANSYS Workbench中,进行疲劳寿命的有限元仿真分析。仿真分析的矩形离合弹簧经过2.0403×105次循环载荷即发生失效。同时,运用自调臂疲劳试验台对20个该结构型号的自调臂进行疲劳试验,实验结果表明:实验的自调臂疲劳寿命均值为1.9101×105次循环载荷,与有限元分析结果一致,有限元疲劳分析方法正确。The failure of rectangular clutch spring of automatic slack adjuster directly affects the work of automatic slack adjuster. It establishes the structural mechanics model of automatic slack adjuster rectangular clutch spring based on its working principle and mechanical structure. In addition, it uploads such structural mechanics model to ANSYS Workbench FEA system to predict the fatigue life of rectangular clutch spring. FEA results show that the fatigue life of rectangular clutch spring is 2.0403×105 cycle under the effect of braking loads. In the meantime, fatigue tests of 20 automatic slack adjusters are carried out on the fatigue test bench to verify the conclusion of the structural mechanics model. The experimental results show that the mean fatigue life of rectangular clutch spring is 1.9101×105, which meets the results based on the finite element analysis using ANSYS Workbench FEA system.

关 键 词：汽车自动调整臂 有限元 疲劳寿命 试验验证 

分 类 号：TH16[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]