1–13 von 13 Ergebnissen
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    A mathematical model to predict railway wheel profile evolution due to wear

    Braghin, F. / Lewis, R. / Dwyer-Joyce, R.S. et al. | Tema Archiv | 2006
    Wheel and rail wear is a fundamental problem in the railway field: the change of profile shape deeply affects the dynamic characteristics ...

    An alternative method for the assessment of railhead traction

    Lewis, S.R. / Lewis, R. / Olofsson, U. | Tema Archiv | 2011
    Work has been carried out to develop a fast test method for the determining of railhead traction levels. Current methods used in the field ...

    A numerical model of twin disc test arrangement for the evaluation of railway wheel wear prediction methods

    Tassini, N. / Quost, X. / Lewis, R. et al. | Tema Archiv | 2010
    Twin disc tests are commonly used to study wear in railway materials. In this work the implementation of a numerical model of the twin disc ...

    Experimental and numerical modelling of wheel-rail contact and wear

    Rovira, A. / Roda, A. / Marshall, M.B. et al. | Tema Archiv | 2011
    In the field of simulation of railroad vehicles, there are many numerical models to estimate the interaction forces between the wheel and ...

    Investigation of the isolation and frictional properties of hydrophobic products on the rail head, when used to combat low adhesion

    Lewis, S.R. / Lewis, R. / Richards, P. et al. | Tema Archiv | 2014
    adhesion incidents and the occurrence of the dew point. It is hypothesised that at or below the dew point water vapour from the air condenses onto ...

    Laboratory study of the tribological properties of friction modifier thin films for friction control at the wheel/rail interface

    Lu, X. / Cotter, J. / Eadie, D.T. | Tema Archiv | 2005
    wheel/rail interfacial coefficient of friction is strongly dependent on the composition and rheological properties of the interfacial layer ...

    Mapping rail wear regimes and transitions

    Lewis, R. / Olofsson, U. | Tema Archiv | 2004
    This paper outlines work carried out to produce maps of rail material wear coefficients taken from laboratory tests run on twin disc and ...

    Rail Grinding for the 21st Century - Taking a Lead from the Aerospace Industry

    Singleton, R. / Marshall, M.B. / Lewis, R. et al. | Tema Archiv | 2012
    grinding operations are done at varying rates ranging from 1-10 mph. Opportunities exist to increase both train speed and depth of cut to improve ...

    The effect of friction modifiers on wheel/rail isolation

    Lewis, R. / Gallardo, E.A. / Cotter, J. et al. | Tema Archiv | 2011
    Train detection, for signalling purposes, is often by means of track circuits. Signalling block occupancy is triggered by the wheelset of ...

    The role of high positive friction (HPF) modifier in the control of short pitch corrugations and related phenomena

    Eadie, D.T. / Kalousek, J. / Chiddick, K.C. | Tema Archiv | 2002
    Vibration and noise from wheel-rail corrugations reduce the life of vehicle and track components and bring great discomfort to passengers ...

    Top-of-rail friction control for curve noise mitigation and corrugation rate reduction

    Eadie, D.T. / Santoro, M. | Tema Archiv | 2006
    Top-of-rail friction modifiers are designed to control frictional characteristics at the wheel-rail interface that influence noise ...

    Twin disc assessment of wheel/rail adhesion

    Gallardo-Hernandez, E.A. / Lewis, R. | Tema Archiv | 2008
    Loss of adhesion between a railway wheel and the track has implications for both braking and traction. Poor adhesion in braking is a safety ...

    Wheel and rail wear—Understanding the effects of water and grease

    Hardwick, C. / Lewis, R. / Eadie, D.T. | Tema Archiv | 2014
    Prediction of the evolution of rail (and wheel) profiles using design tools that integrate multi-body dynamics (MBD) simulations of track ...