Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Influence of the track quality and of the properties of the wheel rail rolling contact on vehicle dynamics
Year:2012
Research Areas
  • Mechanical engineering
Information
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 maximise 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 the wheel?rail friction coefficient.
International
Si
JCR
Si
Title
Vehicle System Dynamics
ISBN
0042-3114
Impact factor JCR
0,722
Impact info
Volume
Journal number
From page
1
To page
20
Month
SIN MES
Ranking
Participants
  • Autor: Berta Suarez Esteban (UPM)
  • Autor: Luis Jesus Felez Mindan (UPM)
  • Autor: Jose Antonio Lozano Ruiz (UPM)
  • Autor: Pablo Rodríguez Miranda (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnologías ferroviarias y simulación avanzada
  • Centro o Instituto I+D+i: CENTRO INV. TECNO. FERROVIARIAS "CITEF"
  • Departamento: Mecánica Industrial
  • Departamento: Ingeniería Mecánica y de Fabricación
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