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汽车通过性的评价指标的研究是地面——车辆系统力学中一个极为重要的内容,为建立一套完整而又科学的评价指标,中外汽车工作者正在进行着大量的研究工作.美国、苏联、中国等学者一致认为单位挂钩牵引力即DP/W可作为汽车通过性主要评价指标之一.DP/W的大小反映车辆在给定的地面条件下的通过能力,如DP/W≥0,说明单个车辆在给定的地面条件下能通过,反之DP/W<0,说明车辆在给定的地面条件下不能通过.假若DP/W相同的两台车辆,在不同地面条件下行驶,其通过能力是不相同的.所以单用某一特定的地面条件下的DP/W的大小来评价车辆的通过性的好坏是不够的.车辆行驶中会遇到各种地面条件,即或是在某一地区,各路段的土壤特性参数也是
The research on the automobile passing evaluation index is an extremely important part of the ground-vehicle system mechanics. To establish a complete and scientific evaluation index, Chinese and foreign automobile workers are carrying out a large amount of research work.The United States, the Soviet Union, China and other scholars unanimously believe that unit-linked traction, ie, DP / W, can be used as one of the main evaluation indexes for passing cars. The size of DP / W reflects the vehicle’s ability to pass under given ground conditions, such as DP / W≥0, Vehicles can pass under given ground conditions, whereas DP / W <0, indicating that vehicles can not pass under given ground conditions. If two vehicles with the same DP / W travel under different ground conditions, their capacity Is not the same.Therefore, it is not enough to evaluate the passing of a vehicle by the size of a DP / W under a specific ground condition.During the driving of the vehicle, various ground conditions are encountered, that is, A region, each section of the soil properties parameters are