• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2020, Vol. 56 ›› Issue (22): 148-158.doi: 10.3901/JME.2020.22.148

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Study on Dynamic Behaviour of Metro Train and Embedded Track System I: Theoretical Modeling, Experimental Analysis and Verification

HAN Jian1, LI Zhihui2, XIAO Xinbiao2, YANG Gang3, WEN Zefeng2, JIN Xuesong2   

  1. 1. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031;
    2. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031;
    3. Chengdu Xinzhu Road & Bridge Machinery Co., Ltd., Chengdu 611430
  • Received:2019-12-01 Revised:2020-01-01 Online:2020-11-20 Published:2020-12-31

Abstract: Embedded track, as a kind of track structure for reducing vibration and noise, is usually designed and applicated for tram. However, the characteristic of continuous support and the advantages of vibration and noise reduction of embedded track make it have a good application prospect in metro. If the embedded track is applied to the metro, it will face challenges of a higher speed, larger axle load, more complex line conditions. The dynamic behaviour of metro train and embedded track system needs to be studied. Dynamic model of metro train and embedded track system are developed. This model considers three subsystems:a whole train consisting of six vehicles, an embedded track, and wheel/rail system. Among them, the track subsystem is the embedded track system, which is the focus of modeling and research. The model considers TIMOSHENKO rail model, the flexible track plate model supported by the equivalent spring-damping unit, and the filling material model considering the inertial, elastic and damping properties around the rail. The dynamic behaviour of the metro train-embedded track system is tested in the first embedded track test line used in metro of China. The dynamic behaviour is analyzed based on the experiment and the dynamic model is verified by the experiment. The developed model and relevant conclusions provide theoretical basis and reference for the application of embedded track structure in metro.

Key words: embedded track, metro train, system dynamics model, line experiment, model validation

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