基于表面外推热点应力法的悬浮架疲劳强度分析  

Research on fatigue analysis of levitation chassis using hot spot stress method based on surface extrapolation

作　　者：迟振华[1] 刘放[1] 赵兴忠[1] 吴元科[1] 

机构地区：[1]西南交通大学机械工程学院,成都610031

出　　处：《现代制造工程》2015年第10期8-11,26,共5页Modern Manufacturing Engineering

基　　金：国家自然科学基金资助项目(51175442);中央高校基金科研业务费专项资助项目(2010ZT03)

摘　　要：基于ANSYS Workbench软件建立了长定子中低速磁浮列车悬浮架有限元模型。分析悬浮架在4种工况下的应力情况,确定疲劳热点部位。采用表面外推热点应力法计算热点应力。依据等效平均应力和等效应力幅,对悬浮架进行疲劳强度评定。结果表明,悬浮架疲劳强度满足要求,为其结构优化提供了一定依据。Based on ANSYS Workbench the finite element model of the levitation chassis of long stator low-speed maglev train was established. Stress conditions of the levitation chassis under the four working conditions was analyzed and the fatigue hot parts was determined. Using hot spot stress method based on surface extrapolation to calculate the hot spot stress. The fatigue strength of levitation chassis was assessed based on the average equivalent stress and equivalent stress amplitude. The result showed that the fatigue strength of the levitation chassis meet the requirements providing some basis for it＇ s structural optimization.

关 键 词：磁浮列车 悬浮架 热点应力 疲劳分析 

分 类 号：U237[交通运输工程—道路与铁道工程] TP391.9[自动化与计算机技术—计算机应用技术]