Journal of Mechanical Science and Technology

, Volume 33, Issue 1, pp 65–76 | Cite as

Vibration control of high-speed trains self-excitation under-chassis equipment by HSLDS vibration isolators

  • Yu Sun
  • Jinsong ZhouEmail author
  • Dao Gong
  • Wenjing Sun
  • Zhanghui Xia


To minimize the self-excitation effects of the equipment on the carbody, a high static and low dynamic stiffness (HSLDS) vibration isolator is proposed by connecting a negative stiffness unit and a positive linear stiffness spring in parallel. The nonlinear stiffness of the HSLDS isolator can be designed according to the needs of any target stiffness curve. A vibration test is applied to obtain the vibration acceleration of the under-chassis equipment. A rigid-flexible coupling multi-body dynamic model of a high-speed train is established which considers the elastic vibration of the carbody and the self-excitation of the under-chassis equipment based on the tested result. Different connection methods of the under-chassis equipment including rigid hanging, vibration isolation theory (VIT) hanging, dynamic vibration absorber (DVA) hanging and HSLDS hanging are applied and their effects on the carbody vibration and ride quality are investigated. The simulation results reveal that the proposed HSLDS vibration isolator can effectively isolate the self-excitation of the under-chassis equipment from the carbody and enhance the ride quality of the high-speed train.


Railway vehicle dynamics Equipment self-excitation High static and low dynamic stiffness Under-chassis equipment vibration isolator Ride quality 


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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Yu Sun
    • 1
  • Jinsong Zhou
    • 1
    Email author
  • Dao Gong
    • 1
  • Wenjing Sun
    • 1
  • Zhanghui Xia
    • 1
  1. 1.Institute of Rail TransitTongji UniversityShanghaiChina

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