| 梯形齿车轮月面牵引性能的离散元分析 |
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| 引用本文： | 崔燚,李雯,王浚,孙鹏.梯形齿车轮月面牵引性能的离散元分析[J].北京航空航天大学学报,2010,36(3):253-256. |
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| 作者姓名： | 崔燚 李雯 王浚 孙鹏 |
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| 作者单位： | 北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学交通科学与工程学院,北京,100191 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目(20070006012) |
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| 摘 要： | 采用离散元法分析梯形齿车轮在月面软土地形的通过性,提出不规则形状颗粒群系统的离散元建模技术,建立车轮牵引性能参数的细观表达式.基于模拟月壤的直剪实验数据,通过反复调试获得最佳土单元模型参数.轮-土作用的离散元分析结果表明:车轮在月壤地形的牵引性能与滑转率和轮齿结构有关,增加滑转率可获得更高的挂钩牵引力,但同时车轮所需的驱动转矩提高;增加轮齿高度可获得更大的土壤推力,但行驶阻力也相应增大;轮齿数量对车轮牵引性能影响较小,但影响车轮在行驶中的平顺性.
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| 关 键 词： | 月壤 离散元 牵引性能 轮-土作用 月球车 |
| 收稿时间： | 2009-03-06 |
Numerical analysis on traction performance of trapezia lugged wheel by distinct element method |
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| Cui Yi,Li Wen,Wang Jun,Sun Peng.Numerical analysis on traction performance of trapezia lugged wheel by distinct element method[J].Journal of Beijing University of Aeronautics and Astronautics,2010,36(3):253-256. |
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| Authors: | Cui Yi Li Wen Wang Jun Sun Peng |
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| Institution: | 1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The soft-terrain trafficability of trapezia-lugged wheel on lunar surface was analyzed by distinct element method(DEM).The modeling technology of DEM was presented to produce irregular-shaped particulate system.The mesoscopic formula of traction performance for wheel was built.Based on simple shear test data,the optimal parameters of lunar simulant particles were obtained by repeated debugging.It is shown from analyzing wheel-soil interaction that there is relationship between traction performance and slip ... |
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| Keywords: | lunar soil distinct element method traction performance wheel-soil interaction lunar rover vehicle |
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