柔性车体与构架对车辆运行平稳性的影响研究  

Study on Influence of Flexible Body and Frame on Vehicle Running Stability

作　　者：张天周 ZHANG Tianzhou(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机械制造与自动化》2023年第6期50-53,共4页Machine Building & Automation

摘　　要：为了研究柔性车体、柔性构架对车辆运行平稳性的影响,通过引入国内某型号的动车组车体及转向架构架的有限元模型,分别建立此车型的刚性车体-刚性构架、刚性车体-柔性构架、柔性车体-刚性构架、柔性车体-柔性构架4种动力学模型并进行分析。结果表明:4种模型中,车体、构架的双重弹性效应会提升车体的临界速度,柔性车体的存在能够更好地反映车体的横向、垂向弯曲振型。研究结果可为保证高速列车在整个生命周期中具有良好平稳性提供参考和依据。In order to study the influence of flexible body and flexible frame on vehicle running stability,four dynamic models of rigid body-rigid frame,rigid body-flexible frame,flexible body-rigid frame and flexible body-flexible frame are established and analyzed by introducing the finite element model of a domuestic EMU body and bogie frame.The results show that in the four models,the critical speed of the car body increases under the dual flexible effect of the car body and frame,and the existence of the flexible body better reflects the lateral and vertical bending vibration modes of the body,which provide a reference and basis for ensuring the good stability of the high-speed train in the whole life cycle.

关 键 词：高速动车 刚柔耦合 蛇行运动稳定性 运行平稳性 

分 类 号：U266.2[机械工程—车辆工程]