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�������պ����ѧѧ�� 2008, Vol. 34 Issue (05) :524-528    DOI:
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1. �������պ����ѧ ��ͨ��ѧ�빤��ѧԺ, ���� 100083;
2. �й��ռ似���о�Ժ���岿 �ռ��ѧ�����̽�������о���, ���� 100094;
3. �������պ����ѧ ��ͨ��ѧ�빤��ѧԺ, ���� 100083;
3. �������պ����ѧ ��ͨ��ѧ�빤��ѧԺ, ���� 100083
Numerical simulation of tractive performance for planetary rover vehicle wheel by discrete element method
Li Wen1, Gao Feng1, Jia Yang2, Sun Peng3*
1. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. Division of Space Science and Deep Space Exploration,
China Academy of Space Technology Institute of Spacecraft System Engineering, Beijing 100094, China;
3. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The numerical simulation for wheel-soil interaction was conducted by discrete element method (DEM) where the grouser-sections of wheels were rectangle, rec-trapezia, and triangle respectively. The distribution of contact reaction for soil particles was analyzed in the granular scales when they are disturbed by different lugged-wheel configurations. The relationship between microscopic results of DEM and macroscopic parameters of tractive performance was built by means of coordinates transformation and algebraic summation. The formulae of soil thrust, motion resistance and drawbar pull were derived respectively in order to study the influence of grouser-section shape upon tractive performance of wheel. The calculated results show that the wheel with rec-trapezia-section grousers possesses the best tractive performance among the three kinds of lugged-wheel configurations in the same traveling condition.
Keywords�� planetary rover vehicle   tractive performance   trafficability   discrete element method     
Received 2007-05-10;
Fund:

�ߵ�ѧУ��ʿѧ�Ƶ�ר����л���������Ŀ(20070006012)

About author: �� ��(1977��),Ů,������,��ʿ��,mosquato@163.com.
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����, �߷�, ����, ����.���̽�⳵����ǣ�����ܵ���ɢԪ����[J]  �������պ����ѧѧ��, 2008,V34(05): 524-528
Li Wen, Gao Feng, Jia Yang, Sun Peng.Numerical simulation of tractive performance for planetary rover vehicle wheel by discrete element method[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(05): 524-528
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I05/524
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