Study on Self-Excited Vibration Mechanism of Wheel-Rail Lateral Contact System

Li Xia Sun; Jian Wei Yao; Fu Guo Hou; Xin  Zhao

doi:10.4028/www.scientific.net/AMM.427-429.257

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 427-429Study on Self-Excited Vibration Mechanism of...

Study on Self-Excited Vibration Mechanism of Wheel-Rail Lateral Contact System

Abstract:

In order to investigate self-excited vibration mechanism of wheel-rail lateral contact system, a two DOF elasticity position wheelset lateral vibration model is established which considers the dry friction; the mechanism of the wheelset lateral self-excited vibration is investigated from the energy point of view. It shows that: the bifurcation diagram of this wheel-rail lateral contact system has a supercritical Hopf bifurcation. The energy of self-excited vibration derives from a part of traction energy; the creep rate in the wheel-rail system act as a feedback mechanism in the wheelset lateral self-excited vibration system. The stability of the wheelset self-excited vibration system depends mainly on the total energy removed from and imported into the system.

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Periodical:

Applied Mechanics and Materials (Volumes 427-429)

Pages:

257-261

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.427-429.257

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Online since:

September 2013

Authors:

Li Xia Sun*, Jian Wei Yao, Fu Guo Hou, Xin Zhao

Keywords:

Creep Rate, Energy, Friction Force, Limit Cycle, Self-Excited Vibration

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* - Corresponding Author

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