某地铁车辆构架疲劳寿命分析  

Fatigue Life Analysis of Metro Vehicle Frame

作　　者：张又铭 李晓峰[1] 周韶泽[1] 郭翰飞[2] 钟英凯 ZHANG Youming;LI Xiaofeng;ZHOU Shaoze;GUO Hanfei;ZHONG Yingkai(School of Locomotive and Rolling Stock Engineering,Dalian 116028,China;School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学机车车辆工程学院,辽宁大连116028 [2]大连交通大学机械工程学院,辽宁大连116028

出　　处：《机械制造与自动化》2025年第1期47-52,共6页Machine Building & Automation

摘　　要：针对地铁车辆转向架构架的疲劳失效问题,基于UIC615-4标准建立某地铁车辆焊接构架的疲劳工况,使用主S-N曲线法对关键位置的静态疲劳寿命进行分析;使用虚拟激励法对地铁车辆构架进行随机振动响应分析并基于IIW标准对其进行动态疲劳寿命预测。计算结果表明:静态疲劳分析中寿命最短的节点位于横向止挡焊缝,动态疲劳分析中寿命最短的节点位于空气弹簧座处,且构架的动态疲劳寿命相对更短。由于动静态疲劳分析结果有明显差异,故动态疲劳分析是不可或缺的。Aiming at fatigue failure of metro vehicle bogie frame,the fatigue condition of a subway vehicle weld frame is established based on UIC615-4 standard,the static fatigue life of key position using main S-N curve method is analysed,analysis on the random vibration response is conducted by pseudo-excitation method and the dynamic fatigue life is predicted based on IIW standard.The calculation results show that the node with the shortest life in the static fatigue analysis is located in the transverse stop weld,the node with the shortest life in the dynamic fatigue analysis is located in the air spring seat,and the dynamic fatigue life of the frame is relatively shorter.Since the dynamic fatigue analysis result differs from the static one significantly,the dynamic fatigue analysis on the frame is indispensable.

关 键 词：地铁车辆 焊接构架 疲劳寿命 主S-N曲线法 随机振动 虚拟激励法 

分 类 号：TB302.3[一般工业技术—材料科学与工程]