The interaction between the tyre and the road surface is responsible for many physical problems such as skid resistance, rolling resistance or noise generation. This paper deals with the numerical study of tyre/road contact. A two-scale iterative method is used for solving the contact problem between a multi-asperity road surface and an elastic half-space. This method has been used successfully for idealized rough surfaces. However, for efficient applications to real surfaces, an appropriate partition of the surfaces is required. A partitioning method is proposed to describe road surfaces using classical image processing and a new load/penetration relation for a single road asperity is introduced. In order to evaluate the efficiency of the method, numerical results for a small sample of road are compared to a classical matrix inversion method, which show at macro-scale a rather good accuracy to predict tyre/road noise. At micro-scale both methods give the same results, but the multi-asperity method is much less time-consuming. Then numerical evaluation of tyre/road static contact pressures for different road textures at full contact area is presented. This approach with new preconditioning can be a reliable and efficient method to simulate contact problems with large surfaces.


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    Title :

    Numerical evaluation of tyre/road contact pressures using a multi-asperity approach


    Additional title:

    Numerische Berechnung des Reifen/Straßenbelag-Kontaktdrucks mit einer Näherung unter Berücksichtigung von Mehrfachunebenheiten


    Contributors:
    Dubois, G. (author) / Cesbron, J. (author) / Yin, H.P. (author) / Anfosso-Ledee, F. (author)

    Published in:

    Publication date :

    2012


    Size :

    11 Seiten, 16 Bilder, 2 Tabellen, 23 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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