西南交通大学学报 2007, 42(2) 217-222 DOI:     ISSN: 0258-2724 CN: 51-1277/U

本期目录 | 下期目录 | 过刊浏览 | 高级检索                                                            [打印本页]   [关闭]
论文
扩展功能
本文信息
Supporting info
PDF(KB)
[HTML全文]
参考文献
服务与反馈
把本文推荐给朋友
加入我的书架
加入引用管理器
引用本文
Email Alert
文章反馈
浏览反馈信息
本文关键词相关文章
多体系统
有限元
疲劳寿命
预测
车体
铁路
本文作者相关文章
缪炳荣
肖守讷
张卫华
金鼎昌
胡文辉
PubMed
Article by MIAO Bingrong
Article by XIAO Shoune
Article by ZHANG Weihua
Article by JIN Dingchang
Article by HU Wenhui

动载作用下柔性车体结构疲劳寿命的仿真

缪炳荣, 肖守讷, 张卫华, 金鼎昌, 胡文辉

西南交通大学牵引动力国家重点实验室, 四川, 成都, 610031

摘要

为准确预测随机动载作用下柔性车体结构的疲劳寿命,将多体动力学仿真和有限元分析相结合,建立了车体多体动力学模型.计算了35个关键部位的载荷历程,并用准静态应力分析法获得了对应的应力影响因子.用模态分析技术获得了车体结构固有频率和模态振型,用子结构技术获得了车体有限元缩减模型.根据危险应力分布、应力时间历程以及Palmgren-Miner损伤理论,利用疲劳分析软件FE-FATIGUE的基于应力的安全强度因子分析法和MATLAB的WAFO技术对柔性车体结构疲劳寿命仿真.仿真结果包括损伤和疲劳寿命预测.

关键词 多体系统   有限元   疲劳寿命   预测   车体   铁路  

Fatigue Life Simulation of Flexible Carbody under Dynamic Loading

MIAO Bingrong, XIAO Shoune, ZHANG Weihua, JIN Dingchang, HU Wenhui

Traction Power State Key Lab., Southwest Jiaotong University, Chengdu 610031, China

Abstract:

To accurately evaluate the fatigue lives of flexible carbodies under dynamic loading, a full locomotive multi-body dynamic model was established by integrating multi-body dynamic simulation (MBS)and finite element method (FEM).Loading histories at 35 critical positions were calculated, and quasi-static stress analysis method was used to obtain the stresses influence coefficient ( SIC) corresponding to the 35 loading histories.The natural frequencies and modes of vibrations were determined by Modal analysis, and the reduced model of the carbody was derived with substructure technology.Fatigue simulation was finally done based on stress distribution, stress-time histories, and Palmgren-Miner damage theory.In the simulation, the safety factor technology in die software FE-FATIGUE and the wave analysis for fatigue and oceanography (WAFO) tool in MATLA were utilized.Simulation results include predictions on damages and fatigue life.

Keywords: multi-body dynamic simulation   FEM   fatigue life   prediction   carbody   railway  
收稿日期 2006-09-13 修回日期  网络版发布日期  
DOI:
基金项目:

国家自然科学基金(50521503);国家自然科学杰出青年基金(50525518)

通讯作者:
作者简介: 缪炳荣(1970- ),男,博士,主要从事多体动力学及有限元疲劳研究,E-mail:brmiao@163.com

参考文献:
[1] LUO R K,GABBITAS B L,BRICKLE B V.Fatigue life evaluation of a railway vehicle bogie using an integrated dynamic simulation[J].Proc.Instn.Mech.Engr.,1994,208:123-132.
[2] STEFAN D,HELMUTH N,DELF S.Fatigue life prediction of a railway bogie under dynamic loads through simulation[J].Vehicle System Dynamics,1998,29:385-402.
[3] STEFAN D,KNOTHE K,KORT M W.Fatigue life simulations applied to railway bogies[C]// The 4th International Conference on Railway Bogies and Running Gears.Hungary:Budapest,1998:21-23.
[4] KIM H S,YIM H J,KIM C B.Computational durability prediction of body structure in propotype vehicles[J].International Journal of Rutomotive Technology.2002,23:129-135.
[5] JAMES A R.Methodology for evaluating vehicle fatigue life and durability[D].PhD thesis,The University of Tennessee,Knoxville,2003:149-170.
[6] 缪龙秀,孙守光,吕澎民,等.提速客车转向架焊接构架应力谱的试验研究[J].铁道车辆,1998,12:128-133.MIAO Longxiu,SUN Shouguang,Lü Pengming,et al.Test research of speeding passenger bogie frame stress spectra[J].Railway Vehicle,1998,12:128-133.
[7] 王成国,孟广伟,原亮民,等.新型高速客车构架的疲劳寿命数值仿真分析[J].中国铁道科学,2001,3:91-94.WANG Chengguo,MENG Guangwei,YUAN Liangming,et al.The analysis of fatigue life of a new type of high-speed passenger car's frame[J].China Railway Science,2001,3:91-94.
[8] 赵少汴,王忠保.抗疲劳设计-方法与研究[M].北京:机械工业出版社,1997:324-325.
本刊中的类似文章

文章评论 (请注意:本站实行文责自负, 请不要发表与学术无关的内容!评论内容不代表本站观点.)

Copyright 2008 by 西南交通大学学报