| 软着陆足垫与模拟月壤界面特性研究 |
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| 引用本文： | 钟世英,黄根清,戚顺超,凌道盛,杨建中.软着陆足垫与模拟月壤界面特性研究[J].岩土力学,2013,34(4):1058-1062. |
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| 作者姓名： | 钟世英 黄根清 戚顺超 凌道盛 杨建中 |
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| 作者单位： | 1.浙江大学 软弱土与环境土工教育部重点实验室，杭州 310058；2.深圳市工勘岩土工程有限公司，广东 深圳 5180262； 3.北京空间飞行器总体设计部，北京 100094 |
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| 基金项目： | 国家自然科学基金资助（No. 51278451）；浙江省自然科学基金资助（No. LZ12E09001） |
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| 摘 要： | 软着陆机构与模拟月壤滑移性能是影响月球探测器月面软着陆稳定性的重要因素。针对缓冲机构所用足垫材料-硬铝，通过直剪仪开展界面直剪试验，研究不同法向应力和剪切速率下不同相对密度模拟月壤和光滑铝板间的接触面变形、强度特性。试验结果表明，稍密时接触面无明显剪应力峰值，近理想弹塑性变形；密实条件下接触面破坏时呈现应变软化现象；法向压力增加接触面强度增加，接触面强度随剪切速率增加而降低，接触面摩擦角取26.8°～31.4°之间。
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| 关 键 词： | 摩擦系数 足垫 滑移特性 摩擦角 剪切速率 相对密度 |
| 收稿时间： | 2012-02-08 |
Interface property between soft landing foot pad and simulant lunar soil |
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| ZHONG Shi-ying,HUANG Gen-qing,QI Shun-chao,LING Dao-sheng,YANG Jian-zhong.Interface property between soft landing foot pad and simulant lunar soil[J].Rock and Soil Mechanics,2013,34(4):1058-1062. |
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| Authors: | ZHONG Shi-ying HUANG Gen-qing QI Shun-chao LING Dao-sheng YANG Jian-zhong |
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| Institution: | 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 |
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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°. |
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| Keywords: | friction coefficient foot pad slip behavior friction angle shear velocity relative density |
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