机车减振器座焊缝疲劳的热点应力分析  

Weld seam fatigue analysis of locomotive damper hold by hot spot stress method

作　　者：王忠[1] 张开林[1] 魏朔[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室机车车辆研究所,四川成都610031

出　　处：《内燃机车》2006年第8期12-14,21,共4页Diesel Locomotives

基　　金：长江学者和创新团队发展计划资助项目(IRT0452)

摘　　要：指出热点应力法是当今焊接疲劳寿命预测的最热门方法。针对某型机车焊接构架的垂向减振器座,基于有限元方法(FEM),利用FE-Fatigue软件进行疲劳预测。利用热点应力法对减振器座焊缝的疲劳强度进行研究,并对母材不同板厚情况下的疲劳强度作了对比分析。Hot spot stress analysis is the most popular method in predicting fatigue life of welded structures.A welded damper hold is studied in this paper.Based on FEM,this method uses FE-Fatigue software to obtain fatigue life.Using hot spot stress method,fatigue strength of damper hold welding seam was analyzed.Fatigue strengths of parent plates of different thickness were compared and analyzed.

关 键 词：热点应力 焊缝 减振器座 疲劳 

分 类 号：U260.331[机械工程—车辆工程]