现代制造工程Issue(10)：47-53,7.DOI:10.16731/j.cnki.1671-3133.2017.10.009
基于模态叠加法的车体疲劳寿命分析
Fatigue strength analysis of carbody based on the mode
摘要
Abstract
Based on the modal displacement response the time history of modal stress of car body is determined by the method of modal stress recovery theory .Then the fatigue life of carbody is evaluated by the Miner accumulated fatigue damage theory .Ac-cording to the analysis of influence of mode of vehicle on the fatigue life ,the first ten modes of carbody with low frequency has the great influence on the fatigue life of car body ,but the modes with high frequency has little effect on the fatigue life .Meanwhile by the analysis of influence of single mode on the fatigue life of the various parts of carbody ,the first order vertical bending mode of carbody has the bigger impact on the fatigue life of carbody .关键词
刚柔耦合动力学/模态叠加法/模态应力恢复法/车体疲劳Key words
rigid-flexible coupling dynamic/modal superposition method/modal stress recovery method/carbody fatigue分类
交通工程引用本文复制引用
朱海燕,邬平波,池茂儒,吴兴文,卢耀辉..基于模态叠加法的车体疲劳寿命分析[J].现代制造工程,2017,(10):47-53,7.基金项目
国家自然科学基金项目(51665015) （51665015）
国家重点研发计划资助项目(2016YFB1200500) （2016YFB1200500）
西南交通大学牵引动力国家重点实验室开放基金项目(TPL1611) （TPL1611）
