梯形齿车轮月面牵引性能的离散元分析

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

崔燚¹,
李雯¹,
王浚¹,
孙鹏²

1.
北京航空航天大学航空科学与工程学院, 北京 100191
2. 北京航空航天大学交通科学与工程学院, 北京 100191

基金项目: 高等学校博士学科点专项科研基金资助项目(20070006012)

详细信息

作者简介:
崔燚(1984-),女,湖北襄樊人,博士生,cuiyi0827@163.com.

中图分类号: V 476.4
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- 被引次数: 0
出版历程
- 收稿日期: 2009-03-06
- 网络出版日期: 2010-03-31

Numerical analysis on traction performance of trapezia lugged wheel by distinct element method

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

摘要

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.
- 月壤 /
- 离散元 /
- 牵引性能 /
- 轮-土作用 /
- 月球车
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 ratio as well as lug configuration. The higher drawbar pull can be obtained as increasing slip ratio, however the driven torque will be enhanced simutanously. Furthermore, bigger lug height produces higher soil thrust, but the motion resistance increases together. The influence of lug-s number on wheel-s traction performance is negligible, whereas it influences on smooth-running of wheel.
- lunar soil /
- distinct element method /
- traction performance /
- wheel-soil interaction /
- lunar rover vehicle

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参考文献(1)

[1] Nakashima H,Fuji H,Oida A,et al.Parametric analysis of lugged wheel performance for a lunar microrover by means of DEM [J].Journal of Terramechanics,2007,44(2):153-162 [2] Khot L R,Salokhe V M,Jayasuriya H P W,et al.Experimental validation of distinct element simulation for dynamic wheel-soil interaction[J].Journal of Terramechanics,2007,44(6):429-437 [3] 李雯,高峰,贾阳,等.深空探测车单轮牵引通过性的离散元数值模拟[J].北京航空航天大学学报,2008,34(5):524-528 Li Wen,Gao Feng,Jia Yang,et al.Numerical simulation of tractive performance for planetary rover vehicle wheel by discrete element method[J].Journal of Beijing University of Aeronautics and Astronautics,2008,34(5):524-528 (in Chinese) [4] Heiken G H,Vaniman D T,French B M.Lunar sourcebook:a user-s guide to the moon[M].NewYork:Cambridge University Press,1991:296-305 [5] 高峰,李雯,孙刚,等.模拟月壤可行驶性的离散元数值分析[J].北京航空航天大学学报,2009,35(4):1-4 Gao Feng,Li Wen,Sun Gang,et al.Numerical analysis on travelability of lunar soil simulant by means of distinct element method [J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(4):1-4 (in Chinese) [6] Li Wen,Gao Feng,Jia Yang.Tractive performance analysis on radially deployable wheel configuration of lunar rover vehicle by discrete element method[J].Chinese Journal of Mechanical Engineering,2008,21(5):66-72 [7] Kulatilake P H S W,Malama B,Wang J L.Physical and particleflow modeling of jointed rock block behavior under uniaxial loading[J].International Journal of Rock Mechanics & Mining Sciences,2001,38(5):641-657

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