铁路提速转向架典型结构失效分析与优化  

Failure Analysis and Optimization of Typical Bogie Structure for Speed-up Trains

作　　者：王冬[1] 张卫华[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《失效分析与预防》2007年第3期1-6,共6页Failure Analysis and Prevention

基　　金：国家创新研究群体科学基金(50521503);国家杰出青年科学基金资助项目(50525518)

摘　　要：尽管我国机车车辆的动力学等运行性能有了长足的进步,但转向架结构可靠性问题十分突出。转向架结构可靠性问题直接影响列车的运行安全性,研究预防转向架结构失效有利于中国高速铁路的发展。针对中国提速列车转向架中出现的几种典型的结构失效案例,本文首先从理论上分析了结构失效的原因,再根据失效原因提出改进方案,以改善转向架服役条件,提高结构强度,避免结构失效。再利用有限元分析软件ANSYS,在相同的载荷和约束条件下,对原结构和优化结构进行应力对比计算,计算结果证明改进是十分合理和有效的。In despite of great progress in railway vehicle dynamics in China,problems of bogie structure reliability are serious.That influent the safety of train operation directly,so study on keeping from bogie structural failures is useful to the development of Chinese high-speed railway.This paper focuses on the several typical bogie structural failures of speed-up trains in China.The reasons of structure failures are analyzed in theory first.According to the failures reasons,the design of the structure are modified, in order to improve service condition, enhance the structural strength and avoid structure failures. The original structures and the modified structures under identical load and restraint are analyzed by using ANSYS. The results show that the motlification is effective.

关 键 词：失效 优化 转向架 可靠性 

分 类 号：V231.95[航空宇航科学与技术—航空宇航推进理论与工程]