›› 2013, Vol. 34 ›› Issue (4): 1058-1062.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Interface property between soft landing foot pad and simulant lunar soil

ZHONG Shi-ying1, 2, HUANG Gen-qing 1, QI Shun-chao1, LING Dao-sheng1, YANG Jian-zhong3   

  1. 1. Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University, Hangzhou 310058, China; 2. Shenzhen Expressway Engineering Consultants Company Limited, Shenzhen, Guangdong 518034, China 3. Beijing Institute of Spacecraft System Engineering, Beijing 100094, China
  • Received:2012-02-08 Online:2013-04-10 Published:2013-04-16

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Abstract: Slip behavior between soft landing mechanisms and simulant lunar soil is one of the most important factors, which influence the stability of lunar explorer landing. Duralumin was the material of cushioning mechanism foot pad. A series of simulant lunar soil - aluminum plate shear tests are performed by direct shear apparatus. The shear deformation and strength of interface between simulant lunar soil-smooth aluminum plate under different relative densities, different shear velocities and different normal stresses are studied. Interface under slightly dense soil presents ideal elastoplastic deformation, accompanied with strain-softening. The interface strength increases with the normal stress increase accompanied with shear velocity; interface friction angle is 26.8°- 31.4°.

Key words: friction coefficient, foot pad, slip behavior, friction angle, shear velocity, relative density

CLC Number: 

  • V 476
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