基于多轴疲劳评估方法的高原机车构架强度计算  

Strength calculation of plateau locomotive frame based on multiaxial fatigue assessment method

作　　者：刘逸 张开林[1] 邵帅 刘家林 LIU Yi;ZHANG Kailin;SHAO Shuai;LIU Jialin(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《电力机车与城轨车辆》2023年第2期1-5,共5页Electric Locomotives & Mass Transit Vehicles

摘　　要：为了准确评估高原机车构架焊接结构的疲劳强度,文章分析了不同的疲劳强度评估方法的适用性,研究了载荷计算的方法和工况组合方式,并通过建立有限元模型对构架进行多轴疲劳强度评估。评估结果显示:构架母材及构架主体焊缝的疲劳强度均能满足设计要求。In order to accurately evaluate the fatigue strength of the welded structure of plateau locomotive frame, this paper analyzes the applicability of different fatigue strength assessment methods. It studies the load calculation methods and working condition combination methods, and evaluates the multiaxial fatigue strength of frame by establishing a finite element model. The results show that the fatigue strength of the frame base material and the main frame weld can meet the design requirements.

关 键 词：高原机车 构架 多轴疲劳评估方法 材料利用度 疲劳强度 

分 类 号：U260.331.8[机械工程—车辆工程]