AbstractMeasuring method and measured results of vertical, longitudinal and lateral forces, which act on tires of a four-wheel drive and four-wheel steering (4WD-4WS) agricultural tractor, are presented in this paper as well as those of longitudinal and lateral slip of the tires. These results were measured during steady-state circular turning, in which a fixed steering wheel angle and a constant running speed were kept, on a paved road. The measurement was also done for a four-wheel drive and two-wheel steering (4WD-2WS) state, disconnecting a rear steering link and fixing the steering angles of the rear tires of the 4WD-4WS tractor to zero. Through the analysis of the results, some turning characteristics of the 4WD-4WS tractor were obtained. A tight corner braking phenomenon was clearly found in the case of 2WS. The 4WS system supplied more efficient turning than the 2WS system. Results obtained from the computer simulation agreed well with the experimental results except in the case of a low speed turn and as to thrusts of tires.


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    Title :

    Measurement of forces acting on 4WD-4WS tractor tires during steady-state circular turning on a paved road


    Contributors:
    Itoh, H. (author) / Oida, A. (author) / Yamazaki, M. (author)

    Published in:

    Journal of Terramechanics ; 31 , 5 ; 285-312


    Publication date :

    1994-01-01


    Size :

    28 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English