汽车钢圈疲劳寿命的有限元分析

摘要

Steel rim is one of the most important opponents of automobile ,which is located at revolving components between tire and sedan for mounting tires and bearing various forces and moments.Therefore it plays an essential role in the safety,stability,and ride comfort as well as traction property for a running automobile.Based on the analyzing process of the nominal stress approach and FEM software ,the methods for estimating fatigue life and structural strength of steel rim under bending condition is discussed in it.Comparing with theoretical computation result and practical application,the method has been proved correctly which may estimate the service life and structure features during designing and provide reference for the design and optimization of steel rim.%钢圈是位于轮胎和车轿之间承受负荷的旋转部件,其作用是安装轮胎,承受轮胎与车轿之间各种作用力和力矩,对汽车行驶的安全性、稳定性、平顺性和牵引性均起着重要的作用.基于名义应力法的分析过程及有限元分析软件,探讨了钢圈弯曲工况下结构强度及疲劳寿命预估的方法.通过理论计算、实际使用情况及弯曲疲劳试验的结果验证了所提方法的正确性,所提方法可在产品设计阶段就预测设计产品的使用寿命及结构特点,为钢圈的设计及优化提供依据.