Skid-steering Resistance Characteristics of Wheeled Vehicle
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The steering resistance characteristic of wheeled skid-steering vehicle is studied,and the interaction of tire-ground is analyzed by using the discrete element method(DEM).A micromechanical model for lateral interaction of tire and ground is established by using PFC2D software,and the relationship of resistance-relative slip velocity and resistance-sag depth is simulated.The fitting formula of skid-steering resistance coefficient is given.The result shows that the bulldozing resistance between tire and ground is much higher than friction force.