北京交通大学学报2016，Vol.40Issue(6)：83-88,6.DOI:10.11860/j.issn.1673-0291.2016.06.014
铁道客车焊接构架疲劳强度评估方法
Evaluation method of fatigue strength for welding bogie frame on railway vehicle
摘要
Abstract
Since bogie frame is a typical welding structure,and weld line is the weakest part of fa-tigue failure,it is extremely important to evaluate its fatigue strength on welding position cor-rectly.First,a simple welding structure in three different modeling methods was established and the comparison analysis based on the results was presented.Second,two bogie frames with differ-ent details on welding position were modeled,and the results of two finite element models on simulative working conditions were carried out with reference to UIC 5 1 5—4 standard.Then,the fatigue strength evaluation and comparison of two bogie frames were carried out by using the modified Goodman curve.The result shows that the modeling method of weld j oints has a signifi-cantly influence on stress results.Using bogie frame model without welding line to assess fatigue strength inclines to safe side,which is feasible in engineering field.This paper can provide refer-ences for design and fatigue assessment of bogie frame.关键词
车辆工程/转向架构架/焊接结构/疲劳强度分析/Goodman曲线Key words
vehicle engineering/bogie frame/welding structure/fatigue strength analysis/Good-man curve分类
交通工程引用本文复制引用
卢耀辉,向鹏霖,曾京,陈天利..铁道客车焊接构架疲劳强度评估方法[J].北京交通大学学报,2016,40(6):83-88,6.基金项目
国家自然科学基金资助项目(51275428) （51275428）
西南交大研究生创新实验实践项目资助(YC201502108) （YC201502108）
