Stress distributions under a wheel taking into consideration friction and adhesion between the wheel and soil, was analyzed using a finite element method. A viscoelastic model of soil was used in order to investigate the tractive performance of a wheel moving on soft ground whose mechanical response was affected by the rate of deformation. In the finite element analysis the wheel was assumed to sink into the soil first, then move forward with a constant contact load, a constant velocity and a constant slip. The interaction between the wheel and the soil was treated as a contact problem so that the proposed method could be used to analyze the wheel performance as sliding occurs at the contact surface between the wheel and the soil. The calculated results showed that the maximum normal stress appeared in front of the lowest point of the wheel and that the tangential stress increased in the rear part of the contact surface. The phenomenon agreed with experimental results. Tractive performance was estimated at various slip levels using the finite element model developed.


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    Title :

    Stress analysis using FEM on stress distribution under a wheel considering friction with adhesion between a wheel and soil


    Contributors:
    Hiroma, T. (author) / Wanjii, S. (author) / Kataoka, T. (author) / Ota, Y. (author)

    Published in:

    Journal of Terramechanics ; 34 , 4 ; 225-233


    Publication date :

    1997


    Size :

    9 Seiten, 7 Bilder, 1 Tabelle, 5 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English