橡胶履带轮静态接地压力测试与建模  

Test and modeling on static ground pressure of rubber track conversion system

作　　者：赵子涵 穆希辉 郭浩亮 吕凯[4] 杜峰坡 

机构地区：[1]陆军工程大学弹药工程系,石家庄050003 [2]特种勤务研究所,石家庄050003 [3]炮兵防空兵装备技术研究所,北京100012 [4]军事交通学院,天津300161

出　　处：《农业工程学报》2018年第3期72-79,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：军内科研项目(装司2012655号);陆军通用弹药导弹技术保障重点实验室资助项目

摘　　要：为快速有效预测橡胶履带轮接地压力,该文针对橡胶履带轮静态接地压力进行了试验研究和数学建模。首先对不同载荷下橡胶履带轮在坚实地面和松软地面的接地压力进行了测试。结果表明:在履带长度方向上,橡胶履带轮接地压力呈多峰值非均匀分布,同时其峰值呈钟罩型分布,且载荷越大,峰值分布越均匀。根据测试结果提出了一种橡胶履带轮静态接地压力分布数学模型,履带长度方向的接地压力采用二次余弦函数表示,履带宽度方向的接地压力采用线性函数表示。相较于其他模型,该模型采用地面硬度参数表征不同的地面条件,避免了进行土壤承压和剪切试验,提高了模型的实用性。最后,基于该模型对橡胶履带轮转向性能进行了仿真计算和试验验证。结果证明:仿真结果与试验数据最大误差约为4.71%,故该模型能够较好地适用于橡胶履带轮的转向性能分析。该文提出的模型可为橡胶履带轮的结构设计和其他性能研究提供参考。Rubber track conversion system is typically fitted instead of tyres on vehicles, with the aim of decreasing ground pressure, improving the trafficability, and protecting the soil. It is important to accurately predict its ground pressure. The configuration of rubber track conversion system is generally triangle, and the integral structure, road wheels＇ arrangement and track size are different from integrated track system. In this paper, the ground pressure distribution under rubber track conversion system was analyzed, and a prediction model for ground pressure distribution was established based on the test data. Firstly, the ground pressure under rubber track conversion system on solid and soft ground was tested by using Tekscan pressure measurement system. The test results showed its ground pressure distribution had the characteristics of both tracked vehicles and wheeled vehicles, but was different from the two. When rubber track conversion system was on the solid ground, the distribution of ground pressure was similar to tracked vehicles in the longitudinal direction, showing a multi-peak discontinuous trend. The ground pressure of track between load wheels was almost 0, and the peak distribution was similar to wheeled vehicles, showing a bell-type trend. The greater the load, the more uniform the peak. In the lateral direction, the distribution was uniform and continuous under the track, also showing a bell-type trend. When rubber track conversion system was on the soft ground, the distribution of ground pressure was multi-peak and continuous in the longitudinal direction. The peak distribution also showed a bell-type trend. In the lateral direction, the distribution of ground pressure on the soft ground was similar to its distribution on the solid ground. Secondly, according to the test data, a mathematical model of the ground pressure under the rubber track conversion system was proposed. In the longitudinal direction, the ground pressure was expressed by the second cosine function, and in the lateral di

关 键 词：车辆 车轮 橡胶 橡胶履带轮 接地压力 模型 转向性能 

分 类 号：U469.694[机械工程—车辆工程]