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高速列车交会时的风致振动研究
引用本文:李雪冰,侯传伦,张曙光,张继业,张卫华.高速列车交会时的风致振动研究[J].振动与冲击,2009,28(7):81-84.
作者姓名:李雪冰  侯传伦  张曙光  张继业  张卫华
作者单位:(西南交通大学牵引动力国家重点实验室,成都 610031)
摘    要:摘 要:为了阐明高速列车交会过程中气动力对列车的系统动力学行为的影响,分别建立了CRH-2动车组的简化几何模型和50个自由度的车辆系统动力学模型。采用有限体积法对三维瞬态可压缩雷诺时均Navier-Stokes方程和k-e 两方程湍流模型进行求解,并通过滑移网格技术实现列车的运动,对考虑和不考虑气动力时的列车系统力学响应进行了数值模拟,并对两种情况下列车的安全性和舒适性进行了分析讨论。研究发现:气动力在列车交会过程中变化剧烈,对列车系统动力学行为的影响非常明显,交会时列车振动剧烈,头车和尾车的安全性和舒适性明显降低。

关 键 词:高速列车    列车交会    空气动力学    CFD    车辆动力学仿真  
收稿时间:2008-6-23
修稿时间:2008-11-11

Flow-induced vibration of high-speed trains in passing events
LI Xue-bing,HOU Chuan-lun,ZHANG Shu-guang,ZHANG Ji-ye,ZHANG Wei-hua.Flow-induced vibration of high-speed trains in passing events[J].Journal of Vibration and Shock,2009,28(7):81-84.
Authors:LI Xue-bing  HOU Chuan-lun  ZHANG Shu-guang  ZHANG Ji-ye  ZHANG Wei-hua
Affiliation:(Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, Sichuan, China)
Abstract:Considering effects of aerodynamics, vehicle dynamic responses of high-speed trains in passing events were studied here. For obtaining aerodynamic load, a simplified geometry model of a high-speed train (CRH-2) was built, and a 50-degree-of-freedom dynamic system was represented for modeling each of three cars constituting the train, a three-dimensional compressible Reynolds-averaged Navier-Stokes equation, combined with a k-e two-equation turbulence model, was solved by using finite volume method, and the motion of the train was carried out by using sliding meshes. The response of the train considering aerodynamic load or not were calculated by using multi-body simulation. The safety and riding quality of the train in passing events considering aerodynamics or not were discussed. It was found that, the aerodynamic force changes rapidly in the process of passing events, it has obvious effect on the vehicle system dynamics, it causes the train drastic vibration, the most serious deterioration of safety and riding quality can be found at the leading car and the tail one.
Keywords:CFD  high-speed train  passing events  aerodynamics  CFD  vehicle dynamics simulation
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