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轮齿构型对月面巡视探测器车轮牵引性能的影响

发表时间:2010-03-31  浏览量:1591  下载量:733
全部作者: 孙鹏,高峰,姚圣卓,崔莹
作者单位: 北京航空航天大学交通科学与工程学院
摘 要: 利用模拟月壤颗粒的细观接触力学模型和构建的不规则几何形状的颗粒群系统,对月面巡视探测器车轮与模拟月壤的交互作用进行动态仿真,颗粒流仿真结果能够较好地再现室内土槽试验中轮下土壤的运动情况以及车轮挂钩牵引力的变化趋势。分析结果显示:在月面环境下,负倾角轮齿车轮的挂钩牵引力整体上高于正倾角轮齿车轮的挂钩牵引力,与无倾角的薄直齿轮齿车轮相比,具有轮齿倾角的车轮的挂钩牵引力要大幅下降。在月面环境下,尖刺状车轮在低滑转时,挂钩牵引力为负值,丧失牵引能力;在高滑转率时,牵引能力也十分有限,此种车轮不适合作为月面巡视探测器的车轮结构。
关 键 词: 车辆工程;月面巡视探测器;牵引性能;轮齿构型;颗粒流仿真
Title: The effect of wheel�lug type on tractive performance of wheel for lunar rover vehicle
Author: SUN Peng, GAO Feng, YAO Shengzhuo, CUI Ying
Organization: School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics
Abstract: The numerical simulation of interaction between lunar rover vehicle�s wheel and lunar soil simulant was conducted based on model of contact mechanics of lunar soil simulant�s particle and irregular particle group system. The particle flow simulations represent the movement of soil under wheel and variational trend of drawbar pull by laboratorial soil bin test. The analytical results show the drawbar pull of wheel with negative obliquity�s lug higher than the drawbar pull of wheel with positive obliquity�s lug. Moreover, compared with straight lug wheel, the drawbar pull of wheel with skew lug decreases greatly. At the condition of lunar environment, the wheel with spiny lug loses tractive ability at lower slip ratio, and its tractive ability is limited at higher slip ratio. Therefore, such configuration of wheel couldn�t be used as the wheel of lunar rover vehicle.
Key words: vehicle engineering; lunar rover vehicle; tractive performance; wheel�lug type; particle flow simulation
发表期数: 2010年3月第6期
引用格式: 孙鹏,高峰,姚圣卓,等. 轮齿构型对月面巡视探测器车轮牵引性能的影响[J]. 中国科技论文在线精品论文,2010,3(6):558-566.
 
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