AbstractOff-road terrain can often be regarded as a finite thickness ground consisting of a soft soil layer on a rigid base. Experiments for the traveling performance of a wheel in a dense sand layer on a rigid base revealed that as the soil layer thickness decreases under the condition of high constant slip, the drawbar pull does not increase monotonically but increases gradually to a maximal value, then decreases to a minimal value, and thereafter again increases rapidly to the highest value at zero soil layer thickness. The mechanical interpretation of the relationship between the drawbar pull and the soil layer thickness is given qualitatively from the aspects of the shear characteristics of dense sand and the rigid-body friction between the wheel and the rigid base of the soil layer. It is indicated that the relationship takes the same form as van der Waals' state equation for the pressure and the volume of an imperfect gas with a phase transition between gas and liquid. The equation representing the relationship of the drawbar pull to the soil layer thickness is proposed in accordance with van der Waals' equation.


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    Titel :

    Travelling performance of a wheel on a finite thickness ground


    Beteiligte:
    Hashiguchi, K. (Autor:in) / Nohse, Y. (Autor:in) / Ueno, M. (Autor:in) / Sumiyoshi, K. (Autor:in) / Uchiyama, K. (Autor:in) / Yoshimaru, T. (Autor:in)

    Erschienen in:

    Journal of Terramechanics ; 31 , 4 ; 257-263


    Erscheinungsdatum :

    1994-01-01


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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