Simulations of roughness growth on railway rails
Simulations of roughness growth on railway rails
A model for the prediction of the initiation and growth of roughness on the rail is presented. The vertical interaction between a train and the track is calculated as a time history for single or multiple wheels moving on periodically supported rails, using a wavenumber-based approach. This vertical dynamic wheel/rail force arises from the varying stiffness due to discrete supports (i.e. parametric excitation) and the roughness excitation on the railhead. The tangential contact problem between the wheel and rail is modelled using an unsteady two-dimensional approach and also using the three-dimensional contact model, FASTSIM. This enables the slip and stick regions in the contact patch to be identified from the input geometry and creepage between the wheel and rail. The long-term wear growth is then predicted by applying repeated passages of the vehicle wheelsets, as part of an iterative solution.
333-344
Sheng, X.
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Thompson, D.J.
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Jones, C.J.C.
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Xie, G.
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Iwnicki, S.D.
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Allen, P.
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Hsu, S.S.
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2004
Sheng, X.
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Thompson, D.J.
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Jones, C.J.C.
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Xie, G.
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Iwnicki, S.D.
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Allen, P.
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Hsu, S.S.
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Sheng, X., Thompson, D.J., Jones, C.J.C., Xie, G., Iwnicki, S.D., Allen, P. and Hsu, S.S.
(2004)
Simulations of roughness growth on railway rails.
Proceedings of the 8th International Workshop on Railway Noise, Buxton, UK, 8-11 September 2004.
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Conference or Workshop Item
(Paper)
Abstract
A model for the prediction of the initiation and growth of roughness on the rail is presented. The vertical interaction between a train and the track is calculated as a time history for single or multiple wheels moving on periodically supported rails, using a wavenumber-based approach. This vertical dynamic wheel/rail force arises from the varying stiffness due to discrete supports (i.e. parametric excitation) and the roughness excitation on the railhead. The tangential contact problem between the wheel and rail is modelled using an unsteady two-dimensional approach and also using the three-dimensional contact model, FASTSIM. This enables the slip and stick regions in the contact patch to be identified from the input geometry and creepage between the wheel and rail. The long-term wear growth is then predicted by applying repeated passages of the vehicle wheelsets, as part of an iterative solution.
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Published date: 2004
Additional Information:
Also published in Journal of Sound and Vibration vol.293, (3-5), 819-829, 2006
Venue - Dates:
Proceedings of the 8th International Workshop on Railway Noise, Buxton, UK, 8-11 September 2004, 2004-01-01
Organisations:
Dynamics Group
Identifiers
Local EPrints ID: 28143
URI: http://eprints.soton.ac.uk/id/eprint/28143
PURE UUID: a3b46fa7-18c7-48f4-8ae1-9523debc3842
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Date deposited: 03 May 2006
Last modified: 12 Dec 2021 02:56
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Contributors
Author:
X. Sheng
Author:
C.J.C. Jones
Author:
G. Xie
Author:
S.D. Iwnicki
Author:
P. Allen
Author:
S.S. Hsu
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