Abstract

In order to control the wheel–rail coupling vibration of an urban railway system, a combined elastic wheel damping structure is proposed where the key parameters that determine the structural damping and thereby control the vibration of the railway system are explored. The vertical acceleration of the elastic wheels is obtained for a range of stiffness coefficients as the wheel moves on an irregular track, which is calculated by the (Formula presented.) method in the time domain. The results show that the vertical acceleration changes with a V-shaped trend, with an increase of wheel stiffness coefficient, which allows the optimum stiffness coefficient for minimum vertical acceleration of the elastic wheel to be obtained. It is observed that when attempting to suppress wheel vibration, an elastic wheel with a larger stiffness coefficient is needed as the degree of track irregularity reduces. This paper provides new insights into the effect of wheel elasticity on vibration characteristics, and thereby provides directions to improve ride quality and passenger comfort.

Original languageEnglish
Pages (from-to)465-480
Number of pages16
JournalProceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics
Volume234
Issue number3
Early online date16 Apr 2020
DOIs
Publication statusPublished - 1 Sep 2020

Keywords

  • coupling vibration
  • Elastic wheel
  • stiffness coefficient
  • track irregularity
  • wheel–rail

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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