(Continued of 36(99)1, p. 3). The problem of off-road vehicle tyre-terrain interactionis is that it is difficult to model accurately. For an off-road vehicle over medium to firm terrain, the tyre load may be entirely supported by the tips of the lugs, or with a minimum carcass contact with the terrain. In this case, the effect of the lugs should be taken into consideration. The forces at the interface between lugged tyre and the soil, including normal and shear stresses, are discussed in this paper. The multi-spoke tyre model was developed to study the effect of tyre lugs on the forces between tyre and terrain and it been extended to predict the tyre forces and moments in the case of combined lateral and longitudinal slip for a cambered tyre. The influence of slip angle, camber angle and soil hardness on off-road tyre performance has been investigated. A computer program was developed using MATLAB software. The results were derived as tyre forces and moments in three directions along the contact length. A comparison between the results of the multi-spoke tyre model of a smooth off-road tyre and an off-road tyre with straight lugs, in the cambered case, has been made. The results indicated that slip angle, camber angle and soil characteristics have a strong effect on off-road tyre performance. The modified mathematical model results help the off-road tyre engineering designers to predict accurate values of tyre forces and moments in this complex case.


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    Title :

    Off-road tyre modelling II: effect of camber on tyre performance


    Contributors:

    Published in:

    Publication date :

    1999


    Size :

    14 Seiten, 12 Bilder, 13 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Off-road tyre modelling II: effect of camber on tyre performance

    Abd El-Gawwad,K.A. / Crolla,D.A. / Soliman,A.M. et al. | Automotive engineering | 1999



    Off-road tyre modelling III: effect of angled lugs on tyre performance

    Abd El-Gawwad, K.A. / Crolla, D.A. / Soliman, A.M.A. et al. | Tema Archive | 1999


    Off-road tyre modelling III: effect of angled lugs on tyre performance

    Abd El-Gawwad,K.A. / Crolla,D.A. / Soliman,A.M. et al. | Automotive engineering | 1999