Analysis of the Influence of Soil on the Maneuverability of Military Off-road Vehicles
Maneuverability on soft ground is one of the main performances of military high-mobility off-road vehicle,and has important strategic significance for its field operations.In order to explore the influence of different soft soil surface conditions on the maneuverability of off-road vehicles,the soil is modeled based on the discrete element method,and the soil stiffness calibration test is carried out through the soil accumulation angle test and soil conical index test.Through the DEM-MBD co-simulation method,the accurate soil model is used to simulate and analyze four different types of soil:incompressible dry soil,incompressible wet soil,compressible dry soil,and compressible wet soil.The influence of soil type on the maneuverability of off-road vehicles is analyzed by comparing the average speed,traction force,driving torque and tire subsidenceof off-road vehicles.The traction ofoff-road vehicle on wet soils is 6.98%less than on dry soils,and its stable travel speed on incompressible soils is 34.2%higher than that on compressible soils,and its speed is more stable on wet soil roads.The research makes up for the gap in the influence of soil on the mobility of the whole vehicle in the field of ground mechanics of domestic vehicles,and can choose the optimal driving road surface for military vehicles in the field of complex terrain,such as sand,snow,mud,etc.,to improve combat efficiency.
military off-road vehiclesoil cone indexdiscrete element methodmultibody dynamicstraction testmaneuverability
万方数据
维普
