汽车钢圈轮辐裂纹成因分析及优化设计  

Analysis and Optimization of Crack Forming on the Wheels' Spoke

作　　者：欧笛声[1] 余泉[1] 焦明成 

机构地区：[1]广西科技大学机械工程学院,广西柳州545006

出　　处：《机械设计与制造》2015年第4期217-220,共4页Machinery Design & Manufacture

基　　金：广西壮族自治区教育厅科研项目(201106LX422)

摘　　要：钢圈对汽车行驶的安全性起着重要的作用。某新型钢圈在弯曲疲劳试验中,在未达到设计使用寿命要求时,轮辐表面就出现了裂纹。为找出裂纹形成原因,在有限元软件中建立钢圈弯曲疲劳试验有限元模型,并分析了钢圈的应力状态及其对疲劳强度的影响。在控制应力幅和最大切应力不超过许用值的条件下,采用正交试验的方法优化轮辐横截面的几何参数。改进后钢圈的疲劳寿命分析表明,借助正交试验可有效改进钢圈的结构,从而增加钢圈的疲劳寿命。Automotive wheelhas a great influence on automotive strfety. A new type of wheel occurs crack during the cornering fatigue tests before meetingthe requirement of the service life. In order to find out the reasor resulting in the crack, builds the cornering fatigne test finite element module in FEA software and analyzes the state of stress and its impact on fatigue strength. Adjusts the cross section of spoke by orthogonal experiment design under controlling stress amplitude and the maximum shear stress is less than allowable value conditions. The wheel which after optimizationfatigne results shows that with the aid of orthogonal experiment can effectivelyameliorate the structure of wheel, thus increasing the fatigue life.

关 键 词：汽车钢圈 裂纹 应力状态 正交试验 疲劳寿命 

分 类 号：TH16[机械工程—机械制造及自动化] TG386[金属学及工艺—金属压力加工]