An investigation into rail corrugation due to micro-slip under multiple wheel/rail interactions
An investigation into rail corrugation due to micro-slip under multiple wheel/rail interactions
The formation of short pitch corrugation on the railhead is studied by using an approach combining wheel/track dynamics, contact mechanics and wear. Multiple wheel/rail interactions are taken into account in the wheel/track dynamics. A quasi-static method based on a two-dimensional contact model is used to solve the unsteady rolling contact problem where the normal contact force and the surface curvature vary. The longitudinal slip due to traction is considered.
Corrugation growth rate is calculated at different wavelengths and at two train speeds using parameters from a British Class 87 electric locomotive and typical track. It has been found that the corrugation growth rate becomes largest when the phase of the normal dynamic contact force is such that its peak occurs about 135° after the corresponding trough in the roughness. The wear is found to be heavier at shorter wavelength and proportional to the amplitude of the dynamic contact force. In addition corrugation is shown to develop more quickly using stiffer pads than softer pads, whereas growth occurs at several frequencies for softer pads.
short pitch corrugation, wear, rail, contact mechanics, dynamics
1115-1125
Wu, T.X.
4f3eef20-3ca9-4910-b05a-4d4f69a919e4
Thompson, D.J.
ac2fd95d-9af1-40eb-899f-1bbbfff84670
2005
Wu, T.X.
4f3eef20-3ca9-4910-b05a-4d4f69a919e4
Thompson, D.J.
ac2fd95d-9af1-40eb-899f-1bbbfff84670
Wu, T.X. and Thompson, D.J.
(2005)
An investigation into rail corrugation due to micro-slip under multiple wheel/rail interactions.
Wear, 258 (7-8), .
(doi:10.1016/j.wear.2004.03.060).
Abstract
The formation of short pitch corrugation on the railhead is studied by using an approach combining wheel/track dynamics, contact mechanics and wear. Multiple wheel/rail interactions are taken into account in the wheel/track dynamics. A quasi-static method based on a two-dimensional contact model is used to solve the unsteady rolling contact problem where the normal contact force and the surface curvature vary. The longitudinal slip due to traction is considered.
Corrugation growth rate is calculated at different wavelengths and at two train speeds using parameters from a British Class 87 electric locomotive and typical track. It has been found that the corrugation growth rate becomes largest when the phase of the normal dynamic contact force is such that its peak occurs about 135° after the corresponding trough in the roughness. The wear is found to be heavier at shorter wavelength and proportional to the amplitude of the dynamic contact force. In addition corrugation is shown to develop more quickly using stiffer pads than softer pads, whereas growth occurs at several frequencies for softer pads.
This record has no associated files available for download.
More information
Published date: 2005
Keywords:
short pitch corrugation, wear, rail, contact mechanics, dynamics
Identifiers
Local EPrints ID: 28425
URI: http://eprints.soton.ac.uk/id/eprint/28425
ISSN: 0043-1648
PURE UUID: b50bd270-2182-4600-9e1a-bbadc52a0e0d
Catalogue record
Date deposited: 02 May 2006
Last modified: 15 Mar 2024 07:24
Export record
Altmetrics
Contributors
Author:
T.X. Wu
Author:
D.J. Thompson
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics