车辆—路面器材相互作用机理研究

Interaction-terramechanics of Vehicles on Mechanized Road Equipments

为分析机械化路面器材保障车辆装备通行能力,探讨路面器材装备的主要结构形式和受力特点。提出路面器材通过性计算的U形沉陷和V形沉陷模式,根据能量原理定义挂钩牵引力功为驱动功和阻力功之差,并分别计算两种模式下车辆通过性评判准则及适用范围,探讨沉陷量、附着系数和变形系数对车辆通过性的影响。通行试验表明,能量判据理论预测机械化路面器材车辆通过性是一种简单合理的工程实用方法。

To predict the trafficability of tires on mechanized road equipment, the main structures of military mechanized road equipment and the correspond.ing terramechanics behavior were discussed. Two failure modes including the U style sinkage mode and the V style sinkage mode were suggested. An energy method was proposed to judge the trafficability. The drawbar pull work of U and V sinkage modes were computed and compared by defining the difference between the driving work and the resistance work. Thus the critical width of road beams were suggested. The influences of sinkage, adhesive coefficient and pressure-sinkage parameter were discussed. And the restrictions on sinkage, adhesive coefficient and pressure-sinkage parameter were suggested. Due to the consistency between the theoretical prediction and test, the energy method is effective to engineering practices.