STP1225

    Computer Simulation of Road-Vehicle Dynamic Interaction Forces of Three- and Four-Axle Trucks

    Published: Jan 1994


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    Abstract

    The road-vehicle interaction forces were studied with two truck models, one with four axles (twelve tires) and the other with three axles (ten tires). The truck models were created using the multibody system analyzing program (ADAMS). The input data for the models are based on real values derived from the truck manufacturer. Two modifications of suspensions were made, one with three dampers. The suspensions were multileaf, parabolic, and air suspensions.

    The road profiles were measured by VTT. The model computes instantaneous locations, speeds, and road contact points of tires. Then it computes vertical and longitudinal forces acting on tire-road contact surfaces as a function of tire stiffness, damping, and longitudinal slips. These forces are then used to study repeatability of dynamic axle loads along the road profile.

    Keywords:

    simulation, axle loads, dynamic behavior, vehicle pavement interaction


    Author Information:

    Huhtala, M
    Technical Research Center of Finland (VTT), Road, Traffic and Geotechnical Laboratory, Espoo,

    Vesimaki, M
    MBS-Models, Inc., Espoo,

    Halonen, P
    Technical Research Center of Finland (VTT), Road, Traffic and Geotechnical Laboratory, Espoo,


    Paper ID: STP13247S

    Committee/Subcommittee: E17.23

    DOI: 10.1520/STP13247S


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