基于不同焊缝结构的单轨车辆转向架构架疲劳分析  

Fatigue Analysis of Monorail Vehicle Bogie Frame Based on Different Weld Structure

作　　者：文孝霞[1] 姜路 杜子学[1] 孔得旭 WEN Xiaoxia;JIANG Lu;DU Zixue;KONG Dexu(School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2021年第1期134-139,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(51475062)。

摘　　要：针对考虑转向架板件之间焊缝对其力学性能的影响,提高仿真分析结果的准确性和有效性,对基于焊缝结构的转向架构架进行了静强度分析,并采用准静态应力分析法对转向架构架进行疲劳强度分析以及疲劳损伤评估,研究了电机箱处不同焊缝结构形式对构架疲劳寿命的影响。研究结果表明:HV型T型焊缝较单面角T型焊缝而言,电机箱焊缝处的疲劳寿命提高了69.6%,能够有效提高转向架构架整体疲劳强度。In order to consider the influence of welds between bogie panels on mechanical properties of bogie and improve the accuracy and effectiveness of simulation analysis results,the static strength analysis of bogie frame based on weld structure was carried out,and the fatigue strength analysis and fatigue damage assessment of bogie frame were analyzed by quasi-static stress method.Meanwhile,the influence of different weld structure forms at the motor box on the fatigue life of the frame was analyzed.The results show that the fatigue life of HV type T-weld at the welding seam of the motor box is 69.6% higher than that of the original single-sided fillet T-weld,which can effectively improve the overall fatigue strength of the bogie frame.

关 键 词：车辆工程 转向架构架 T型焊缝 整车动力学仿真 载荷时间历程 疲劳分析 

分 类 号：U260.331[机械工程—车辆工程] U232[交通运输工程—载运工具运用工程]