西南交通大学学报（社会科学版）Issue(4)：700-705,6.DOI:10.3969/j.issn.0258-2724.2014.04.022
车轮扁疤引起的轮轨冲击分析
Analysis of Wheel/Rail Impact Induced by Wheel Flats
摘要
Abstract
In order to study the dynamic issues induced by wheel flats for high speed trains,a dynamic model and new/worn wheel flat models were developed using the multi-body theory and the equivalent track excitation method. The simulation method considering the change of wheel radius was applied to simulate the wheel flat and analyze the wheel/rail impact caused by wheel flats. The results show that the behaviors of wheel-rail impact forces caused by new and worn wheel flats are different:the impact force caused by a worn flat increases with the train speed increasing,and is significantly larger than that by a new flat at high speeds. When the running speed of the train is larger than 200 and 250 km/h,the length of the wheel flat should be limited within 35 and 30 mm,respectively.关键词
车轮扁疤/轮轨冲击/扁疤限值Key words
wheel flat/wheel/rail impact/wheel flat limit分类
交通工程引用本文复制引用
王忆佳,曾京,高浩,罗仁..车轮扁疤引起的轮轨冲击分析[J].西南交通大学学报（社会科学版）,2014,(4):700-705,6.基金项目
国家自然科学基金资助项目（5100518）；国家973计划资助项目 （）
