摘要
运行速度不断提升是当今高速列车发展的趋势;而车辆系统振动响应随运行速度的变化特征可作为衡量列车设计性能好坏的指标。采用多体动力学软件和有限元方法相结合,建立刚柔耦合的列车动力学模型;其中轨道不平顺激励中的动态不平顺部分采用实车实测数据标定。通过仿真,获得车辆系统在0~50 Hz频率范围内的振动响应随运行速度的变化特征。结果表明,随着运行速度的提高,车辆系统振动响应与平稳性指标呈现非单调的增长趋势。受轨道板长度为周期的动态不平顺激励影响,车辆在低速存在不利运行速度区域。
Variation characteristics of vehicle system versus running speed can be used as a measurement index to evaluate the properties of vehicle system,especially in the tendency of increasing running speed.A rigid-flexible-coupling vehicle dynamic model combined multi-body dynamic and finite element method is built to simulate vibration response of vehicle system in the range of 0 - 50 Hz.The track dynamic irregularities are calibrated with actual on-line measurement data.Simulation results show that the vibration responses and the sperling index of vehicle system demonstrate a non-monotonic growth character and there is an adverse operating speed region induced by track dynamic irregularities.
作者
刘玉标
张营营
邢云林
谢焕雯
LIU Yu-biao;ZHANG Ying-ying;XING Yun-lin;XIE Huan-wen(Key Laboratory for Mechanics in Fluid Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190 China;Technology and Engineering Center for Space Utilization,Chinese Academy of Sciences,Beijing 100094,China;Beijing Research Center of Micro-vibration Environmental Control and Engineering Technology,Beijing 100142,China)
出处
《科学技术与工程》
北大核心
2018年第20期320-325,共6页
Science Technology and Engineering
基金
国家"973"项目(2011CB711100)资助
关键词
高速列车
刚柔耦合
车辆系统振动
轨道动态不平顺
运行速度
平稳性指标
high-speed train
rigid-flexible-coupled
vehicle vibration
track dynamic irregularity
running speed
sperling index
