Influence of the track quality and of the properties of the wheel rail rolling contact on vehicle dynamics

Suárez Esteban, Berta and Félez Mindán, Jesús and Lozano, J.A. and Rodríguez, Pablo (2013). Influence of the track quality and of the properties of the wheel rail rolling contact on vehicle dynamics. "Vehicle System Dynamics", v. 51 (n. 2); pp. 301-320. ISSN 0042-3114. https://doi.org/10.1080/00423114.2012.725853.

Description

Title: Influence of the track quality and of the properties of the wheel rail rolling contact on vehicle dynamics
Author/s:
  • Suárez Esteban, Berta
  • Félez Mindán, Jesús
  • Lozano, J.A.
  • Rodríguez, Pablo
Item Type: Article
Título de Revista/Publicación: Vehicle System Dynamics
Date: 2013
ISSN: 0042-3114
Volume: 51
Subjects:
Freetext Keywords: railway dynamics, sensitivity analysis, dynamic behaviour, track quality, wheel-rail friction coefficient, equivalent conicity, worn wheels, safety, track fatigue, ride quality, EN 14363 standard, UIC 518 leaflet
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica y de Fabricación [hasta 2014]
Creative Commons Licenses: None

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Abstract

This work describes an analytical approach to determine what degree of accuracy is required in the definition of the rail vehicle models used for dynamic simulations. This way it would be possible to know in advance how the results of simulations may be altered due to the existence of errors in the creation of rolling stock models, whilst also identifying their critical parameters. This would make it possible to maximize the time available to enhance dynamic analysis and focus efforts on factors that are strictly necessary.In particular, the parameters related both to the track quality and to the rolling contact were considered in this study. With this aim, a sensitivity analysis was performed to assess their influence on the vehicle dynamic behaviour. To do this, 72 dynamic simulations were performed modifying, one at a time, the track quality, the wheel-rail friction coefficient and the equivalent conicity of both new and worn wheels. Three values were assigned to each parameter, and two wear states were considered for each type of wheel, one for new wheels and another one for reprofiled wheels.After processing the results of these simulations, it was concluded that all the parameters considered show very high influence, though the friction coefficient shows the highest influence. Therefore, it is recommended to undertake any future simulation job with measured track geometry and track irregularities, measured wheel profiles and normative values of wheel-rail friction coefficient.

More information

Item ID: 30260
DC Identifier: http://oa.upm.es/30260/
OAI Identifier: oai:oa.upm.es:30260
DOI: 10.1080/00423114.2012.725853
Official URL: http://www.tandfonline.com/doi/abs/10.1080/00423114.2012.725853
Deposited by: Berta Suárez
Deposited on: 25 Jun 2014 06:21
Last Modified: 22 Apr 2016 00:30
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