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The Effect of Wedge Friction Conditions on the Dynamic Wheel-Rail Contact Force on Short Wavelength Defects

[+] Author Affiliations
Yan Quan Sun, Colin Cole

Central Queensland University, Rockhampton, Queensland, Australia

Paper No. JRC2006-94038, pp. 37-43; 7 pages
doi:10.1115/JRC2006-94038
From:
  • ASME/IEEE 2006 Joint Rail Conference
  • Joint Rail
  • Atlanta, Georgia, USA, April 4–6, 2006
  • Conference Sponsors: Rail Transportation Division
  • ISBN: 0-7918-4203-7
  • Copyright © 2006 by ASME

abstract

For wagons with three-piece bogies, the suspension dynamic characteristics are largely dependent on the friction condition of the wedge dampers. The influence of changes in wedge friction conditions on the dynamic wheel load is investigated. Comprehensive wagon-track modelling has been developed for the analysis. Simulations show that a small friction coefficient on the wedge contact surfaces can lead to the severe resonance of suspension system, causing large dynamic wheel loads and high levels of wheel unloading while with a large friction coefficient, suspension resonance is restricted, leading to smaller dynamic wheel loads.

Copyright © 2006 by ASME

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