Study on the Torque Distribution of Wheel-Track Hybrid Drive Vehicles during Pass Shoreline 2023-01-0784

To study the torque distribution of track and tire in the wheel-track hybrid drive vehicle driving along the shoreline, an analysis model of wheel-track hybrid drive vehicle was established by using multi-body dynamics (MBD), discrete element (DEM), and shoreline pavement construction methods. The vehicle speed, acceleration, torque, vertical load, sinkage, slip, and other indicators when the vehicle passes the shoal at different wheel speed of rotation are analyzed. The relationships between wheel speed of rotation and slip, sinkage and slip, and vertical load and driving moment were studied, and the laws that the sinkage of tires and tracks is positively related to their slippage and the driving moment of wheels and tracks is positively related to their vertical load were obtained. The results show that: (1) The wheel-track hybrid vehicle can pass the specific shoal with subsidence of 330mm~350mm, and the ideal speed is about 5km/h~6km/h, which can be used to improve the shoal passing capacity of heavy trucks. (2) When the vertical load of the track is 25%~35%, the driving torque is close to the proportion of the tire, but the discontinuity of track movement leads to the fluctuation of driving torque more than that of the tire.