Wheel–rail contact

Experimental study of the creep forces–creepage relationships

A. Alonso, A. Guiral, L. Baeza, Simon Iwnicki

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The wheel–rail contact problem plays an important role in the simulation methods used to solve railway dynamics problems. As a consequence, many different mathematical models have been developed to calculate wheel–rail contact forces. However, most of them tackle this problem purely from a theoretical point of view and need to be experimentally validated. Such validation could also reveal the influence of certain parameters not taken into account in the mathematical developments. This paper presents the steps followed in building a scaled test-bench to experimentally characterise the wheel–rail contact problem. The results of the longitudinal contact force as a function of the longitudinal creepage are obtained and the divergences with respect to Kalker's simplified theory are analysed. The influence of lateral creepage, angular velocity and certain contaminants such as cutting fluid or high positive friction modifier is also discussed.
Original languageEnglish
Pages (from-to)469-487
Number of pages19
JournalVehicle System Dynamics
Volume52
Issue numbersup1
Early online date23 May 2014
DOIs
Publication statusPublished - 2014

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Cutting fluids
Angular velocity
Creep
Impurities
Mathematical models
Friction

Cite this

Alonso, A. ; Guiral, A. ; Baeza, L. ; Iwnicki, Simon. / Wheel–rail contact : Experimental study of the creep forces–creepage relationships. In: Vehicle System Dynamics. 2014 ; Vol. 52, No. sup1. pp. 469-487.
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Wheel–rail contact : Experimental study of the creep forces–creepage relationships. / Alonso, A.; Guiral, A.; Baeza, L.; Iwnicki, Simon.

In: Vehicle System Dynamics, Vol. 52, No. sup1, 2014, p. 469-487.

Research output: Contribution to journalArticle

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T1 - Wheel–rail contact

T2 - Experimental study of the creep forces–creepage relationships

AU - Alonso, A.

AU - Guiral, A.

AU - Baeza, L.

AU - Iwnicki, Simon

PY - 2014

Y1 - 2014

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AB - The wheel–rail contact problem plays an important role in the simulation methods used to solve railway dynamics problems. As a consequence, many different mathematical models have been developed to calculate wheel–rail contact forces. However, most of them tackle this problem purely from a theoretical point of view and need to be experimentally validated. Such validation could also reveal the influence of certain parameters not taken into account in the mathematical developments. This paper presents the steps followed in building a scaled test-bench to experimentally characterise the wheel–rail contact problem. The results of the longitudinal contact force as a function of the longitudinal creepage are obtained and the divergences with respect to Kalker's simplified theory are analysed. The influence of lateral creepage, angular velocity and certain contaminants such as cutting fluid or high positive friction modifier is also discussed.

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