The objective of this study is to investigate the adhesion characteristics of wheel/rail under oil contamination with consideration of surface roughness using a three-dimensional model of wheel/rail in rolling contact. A partial elastohydrodynamic lubrication theory is employed in the model. An under-relaxation revision on the film thickness is used to keep the simulation procedure stable. The dependence of the wheel/rail adhesion coefficient on train speed, surface roughness amplitude, parameter of roughness orientation and axle load is studied under oil contamination. Moreover, the numerical solutions of a two-dimensional model are compared with those of the three-dimensional model. In addition, a good agreement has been found between the numerical results and the experimental results obtained by a JD-1 wheel/rail simulation facility, which consists of a small wheel roller serving as locomotive or rolling stock wheel and a large wheel roller serving as rail.


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    Title :

    Analysis of wheel/rail adhesion under oil contamination with surface roughness


    Contributors:
    Wu, Bing (author) / Wen, Zefeng (author) / Wang, Hengyu (author) / Jin, Xuesong (author)


    Publication date :

    2013


    Size :

    10 Seiten, 11 Bilder, 1 Tabelle, 26 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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