车轮径向疲劳试验有限元仿真及疲劳寿命估算  

FEM simulation for wheel radial fatigue test and fatigue life evaluation

作　　者：颜伟泽[1] 郝艳华[1] 黄致建[1] 蒋万标[1] 

机构地区：[1]华侨大学机电及自动化学院,泉州362021

出　　处：《机械设计与制造》2011年第6期27-29,共3页Machinery Design & Manufacture

基　　金：厦门市科技计划高校创新项目(3502Z20083044)

摘　　要：采用有限元分析方法,建立汽车车轮有限元模型,模拟车轮径向疲劳试验施加合理的载荷及边界条件。通过分析车轮试验过程中的应力变化情况,得出高应力集中区域及其各主应力值,运用疲劳寿命计算理论及ANSYS软件估算车轮的疲劳寿命。通过与车轮径向疲劳试验结果进行比较,结果表明高应力集中区域与实际裂纹位置吻合,预估的疲劳寿命与车轮实验寿命基本吻合,验证了有限元方法预估车轮寿命的有效性,为以后对车轮进行结构改进起指导作用。A finite element model for automobile wheel is established with finite element analysis method,and reasonable loads and boundary conditions are applied by simulating the radial fatigue test. Through analyzing the change of stress in the process of wheel testing,high stress positions of the automobile wheel and principal stresses are obtained,then evaluates the fatigue life with theory and ANSYS soft. Comparing with the radial fatigue test result,it shows that the high stress positions are consistent with the actual locations of cracks,it is the same for fatigue life evaluation and the wheel＇s true life.All of these approve that it is valid to evaluate the wheel＇s fatigue life with the finite method, which will play a directive role for later wheel structure improvement.

关 键 词：车轮 轮辋 径向疲劳试验 有限元仿真 疲劳寿命 

分 类 号：TH16[机械工程—机械制造及自动化] U463.34[机械工程—车辆工程]