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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Contributors:

    Published in:

    Vehicle System Dynamics ; 51 , 2 ; 301-320


    Publication date :

    2013-02-01


    Size :

    20 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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

    Suarez,B. / Felez,J. / Lozano,J.A. et al. | Automotive engineering | 2013


    Wheel-rail rolling contact theory

    Kalker, J.J. | Tema Archive | 1991


    Solving conformal wheel–rail rolling contact problems

    Vollebregt, Edwin / Segal, Guus | Tema Archive | 2014


    Solving conformal wheel-rail rolling contact problems

    Vollebregt,E. / Segal,G. / Delft Univ.of Technol.,NL | Automotive engineering | 2014


    Rolling contact fatigue of wheel and rail

    Dörner, Florian / Kleiner, Ott / Schindler, Christian et al. | Tema Archive | 2012