不同粒径分布模拟月壤承压特性试验研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2012, Vol. 33 ›› Issue (12): 2338-2346.

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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)

Abstract

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

CLC Number:

V476
TU411

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

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