不同粒径分布模拟月壤承压特性试验研究

材料工程与机械制造

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不同粒径分布模拟月壤承压特性试验研究

邹猛¹, 李建桥¹, 何玲², 李豪¹, 张晓冬¹, 周桂芬¹

1. 吉林大学工程仿生教育部重点实验室, 吉林长春 130022;
2. 北京卫星环境工程研究所可靠性与环境工程技术国防科技重点实验室, 北京 100083

收稿日期:2011-12-31 修回日期:2012-03-03 出版日期:2012-12-25 发布日期:2012-12-24
通讯作者: 邹猛 E-mail:zoumeng@jlu.edu.cn
作者简介:邹猛男, 博士, 副教授, 硕士生导师。主要研究方向: 深空探测地面力学, 工程仿生学。Tel: 0431-85095760-8707 E-mail: zoumeng@jlu.edu.cn
基金资助:
国家自然科学基金(50875107);高等学校博士学科点专项科研基金(20110061120050);吉林省科技发展计划(201101024);吉林大学"985工程项目";吉林大学基本科研业务费(Z201102)

Experimental Study on the Pressure-sinkage Characteristic of the Simulant Lunar Regolith with Different Particle Size Distributions

ZOU Meng¹, LI Jianqiao¹, HE Ling², LI Hao¹, ZHANG Xiaodong¹, ZHOU Guifen¹

1. Key Laboratory for Bionics Engineering of the Ministry of Education, Jilin University, Changchun 130022, China;
2. Key Laboratory of Defense Science and Technology on Reliability and Environmental Engineering, Beijing Institute of Spacecraft Environment Engineering, Beijing 100083, China

Received:2011-12-31 Revised:2012-03-03 Online:2012-12-25 Published:2012-12-24
Supported by:
National Natural Science Foundation of China (50875107); Research Fund for the Doctoral Program of Higher Education of China (20110061120050); Science and Technology Development Project of Jilin Province(201101024); National "985 Project" of Jilin University; Basic Project of Jilin University (Z201102)

摘要/Abstract

摘要：

月壤的承压特性决定月面巡视探测器的行驶阻力和沉陷,是影响月面可通过性的主要特征之一。为了得出不同粒径分布的模拟月壤在巡视器地面载荷和月面载荷下的承压特性,通过压板试验获取了3种不同粒径分布模拟月壤的承压性能曲线与参数。分析表明:粒径分布对模拟月壤承压性能影响大,粒径粗且分布均匀的JLU-1模拟月壤承压能力最强,其次为JLU-3模拟月壤,而粒径细且分布窄的JLU-2模拟月壤承压能力最弱;3种模拟月壤的变形指数在其他模拟月壤的范围内,松软状态时接近月壤值,在小载荷作用且松软状态时变形指数小于1;3种模拟月壤的内聚模量在其他模拟月壤的范围内,但大于月壤值;松软状态时3种模拟月壤的摩擦模量在其他模拟月壤的范围内,中密和密实状态下均大于月壤值。研究结果对月面探测器行走机构的仿真和路径规划具有参考意义。

关键词: 模拟月壤, 承压特性, 粒径分布, 通过性, 巡视器

Abstract:

The bearing capacity of lunar regolith determines the rolling resistance of a lunar rover, which is one of the important characteristics for rover trafficability. The pressure-sinkage data of three kinds of simulant lunar regolith samples of JLU-1, JLU-2, and JLU-3 with different particle distributions are obtained by plate tests in different load circumstances. The results show that particle size distribution has great influence on the pressure-sinkage curve. JLU-1 has the strongest bearing capacity due to big particle sizes and uniform distribution. This is followed by JLU-3, and JLU-2 is the weakest due to small particle sizes and narrow distribution. The exponents of deformation of the three kinds of simulant regolith samples are within the range of other simulant lunar regolith, and close to the recommendation of true lunar regolith under soft circumstances. The cohesive modulus of the three kinds of simulant lunar regolith samples are within the range of other simulant lunar regolith too, but greater than the recommended lunar soil in soft circumstances. The frictional moduli of the three kinds of simulant lunar regolith samples are within the range of other simulant lunar regolith in soft circumstances, but greater than the recommended lunar soil in dense and hard circumstances. The results can provide a reference for the evaluation of lunar rover trafficability.

Key words: simulant lunar regolith, pressure-sinkage characteristic, particle size distribution, trafficability, lunar rover

中图分类号:

V476
TU411

邹猛, 李建桥, 何玲, 李豪, 张晓冬, 周桂芬. 不同粒径分布模拟月壤承压特性试验研究[J]. 航空学报, 2012, 33(12): 2338-2346.

ZOU Meng, LI Jianqiao, HE Ling, LI Hao, ZHANG Xiaodong, ZHOU Guifen. Experimental Study on the Pressure-sinkage Characteristic of the Simulant Lunar Regolith with Different Particle Size Distributions[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(12): 2338-2346.

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E-mail：hkxb@buaa.edu.cn

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不同粒径分布模拟月壤承压特性试验研究

Experimental Study on the Pressure-sinkage Characteristic of the Simulant Lunar Regolith with Different Particle Size Distributions

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