The steering problem of multi axle vehicles in sandy soil has always been an important issue in terra-mechanics. Numerical simulation method has become an important research method to study the vehicle-terrain contact problems. In this paper, the discrete element method is used to establish the sandy soil pavement model, and the multi-body dynamics method is used to establish the vehicle body model. The coupling of two methods are used to carry out the driving simulation of multi axle vehicles on sandy soil pavement, and the force of tires and the speed and trajectory of vehicles are analyzed. The results show that the DEM-MBD coupling method has great application prospects in vehicle-terrain simulation.
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