铁道科学与工程学报2016，Vol.13Issue(3)：557-563,7.
考虑轮对柔性的车轮疲劳寿命研究
Fatigue life of railway wheel based on rigid -flexible coupling dynamic model of vehicle syste m
摘要
Abstract
The wheels of the CRH2 trailer are taken as the research object,and a vehicle system dynamic model with flexible wheelsets was established.The finite element method and Palmgren -Miner rule were used to study the fatigue life of wheel.First,the finite element model of wheelset and its substructure model were obtained u-sing finite element software ANSYS.Second,a rigid -flexible coupling dynamic model of vehicle system which contains four flexible wheelsets was established using multi -body dynamics software SIMPACK,andthe time his-tory of loads and the dynamic response applied on the wheelset are obtained.The results were compared with the ones of multi -rigid vehicle system dynamic model.Finally,the fatigue life of wheel were analyzed based on nominal stresses and Plamgren -Miner rule.The results show that the time history of dynamic loads applied on wheels obtained by the vehicle system dynamic model with flexible wheelsets are more accurate ;the fatigue rup-ture emerges first at the transition between rim and wheel hub and is non -proportional multi -axis destruction. The fatigue life of wheels are longer than designed durable years,so most of wheels which do not reach the limit of abrasion could be recycled after flawdisposition.关键词
疲劳寿命/有限元法/柔性轮对/刚柔耦合动力学模型Key words
fatigue life/finite element method/flexible wheelset/rigid -flexible dynamic model分类
交通工程引用本文复制引用
吴正习,石广田..考虑轮对柔性的车轮疲劳寿命研究[J].铁道科学与工程学报,2016,13(3):557-563,7.基金项目
甘肃省财政厅基本科研经费资助项目；兰州交通大学青年科学基金资助项目 （）
