• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (4): 148-153.doi: 10.3901/JME.2019.04.148

• 运载工程 • 上一篇    下一篇

高寒动车组-40℃环境下动力学性能

滕万秀1,2, 罗仁1, 石怀龙1, 曾京1   

  1. 1. 西南交通大学牵引动力国家重点实验室 成都 610031;
    2. 中车长春轨道客车股份有限公司高速列车系统集成国家工程实验室 长春 130062
  • 收稿日期:2018-03-01 修回日期:2018-08-06 出版日期:2019-02-20 发布日期:2019-02-20
  • 通讯作者: 罗仁(通信作者),男,1979年出生,副研究员,硕士研究生导师。主要研究方向为车辆系统动力学。E-mail:luoren@swjtu.edu.cn
  • 作者简介:滕万秀,男,1979年出生,工程师,博士研究生。主要研究方向为机车车辆系统动力学。E-mail:13844841121@126.com
  • 基金资助:
    国家重点研发计划(2016YFB1200501)和牵引动力国家重点实验室自主课题(2015TPL_Z03)资助项目

Dynamics Behaviour of High-speed Train at the Low Temperature of -40℃

TENG Wanxiu1,2, LUO Ren1, SHI Huailong1, ZENG Jing1   

  1. 1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031;
    2. National Engineering Laboratory of High-speed Train System Intergration, CRRC Changchun Railway Co. Ltd., Changchun 130062
  • Received:2018-03-01 Revised:2018-08-06 Online:2019-02-20 Published:2019-02-20

摘要: 低温环境对高速动车组动力学性能影响显著,需要掌握低温下的车辆参数变化范围,针对-40℃或极低温工况鲜有研究。基于悬挂元件低温特性试验结果,建立高寒动车组非线性动力学仿真模型,并将常温环境下的动力学仿真结果与线路试验结果进行对比验证;将车辆系统悬挂参数、轮轨匹配、轮轨界面参数考虑为正态随机分布,采用拉丁超立方采样方法组合得到300种计算工况,仿真研究高寒动车组在-40℃低温环境运行时的动力学性能。300 km/h速度条件下,车辆运行稳定性和安全性能满足标准要求,但新镟修车轮在直线运行工况下的横向平稳性较常温环境下差,主要是由于车辆发生了横向低频晃动;低温引起橡胶元件和减振器的刚度和阻尼增大,导致在与车体上心滚摆接近的频率范围内,前后转向架同向蛇行运动的阻尼比降低,引发以车体滚摆为主的横向晃动,因此高寒动车组需要注意预防新镟轮后的车体晃动现象。为低温环境下的高速动车组悬挂参数使用范围和动力学性能设计提供了参考。

关键词: 动车组, 动力学仿真, 极低温环境, 随机因素, 线路试验

Abstract: The low temperature has great effect on the vehicle system dynamics of high-speed train, which needs to know the range of variation of suspension parameters in low temperature, but there exists rare researches on the dynamics behaviour of railway vehicle when it bears a quite low temperature of -40℃ or lower. A non-linear dynamics railway vehicle model is built for a high-speed train running in cold climate on the basis of low-temperature dynamics performance tests for its suspension components. The modelling accuracy is validated by comparing the simulated results with the field measurements within the normal temperature. In the numerical simulations, the stochastic characteristics of suspension parameters components, wheel-rail interactions, wheel-rail interfaces are considered as normal distributions. Then the Latin hypercube sampling (LHS) method is applied to design numerical scenarios, and a total of 300 cases is considered during the numerical analysis. It shows that the hunting stability and safety indices still meet the requirements declared in respective criterion at the speed of 300 km/h, while the lateral ride quality under extreme low-temperature case is a bit severe than that under normal temperature case resulting from the lateral sway motion of car body when the vehicle with reprofiled wheels running on tangent tracks. Lab tests and simulations demonstrate that the low-temperature increases the rubber stiffness and dampers' damping significantly and leads to a low damping ratio of the in-phase hunting movements of two bogies, which share a similar frequency with the swaying motion of car body. The swaying movement of car bod has the rotation center higher than the position of center of mass of car body. This contributes a lateral swaying motion of car body, and then attentions shall be paid for the newly reprofiled high-speed vehicles in case of ca body swaying. A reference is provided for the design of suspension parameters and dynamic behavior of high-speed train under the low temperature situation.

Key words: dynamics simulation, extreme low-temperature, field tests, high-speed trains, stochastic parameters

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