Simulation and Experimental Study on the Effect of Large Granular Rocks in Lunar Soil on Drilling Load

doi:10.13209/j.0479-8023.2019.008

Abstract

Abstract: The dynamics of auger drilling into lunar soil with large granular rocks was studied by discrete element method (DEM) simulation and experiment, in which the large granular rocks with different configurations were arranged at different locations. The result of simulation and experiment indicate that the surface morphology is the key factor which controls whether the granular rocks could be removed in drilling process. The result would be an important support for China’s deep space exploration mission.

Key words: DEM, lunar soil, auger drilling, large granular rocks, load

摘要： 采用离散单元法(discrete element method, DEM)和实验方法, 研究用螺旋钻具钻取月壤的过程中, 月壤内部大颗粒位置和构型对钻进力载特性的影响。通过 DEM 方法和实验方法研究结果的对比分析, 明确了DEM方法在钻取动力学中的局限性及有效性, 发现钻进过程中碰到大颗粒时的典型力载特征及影响大颗粒有效拨开的关键因素是表面形态。

关键词: DEM方法, 月壤, 钻取, 大颗粒, 钻进力载

PANG Yong, FENG Yajie, SUN Qichen, LAI Xiaomin, WANG Haiyuan, CHEN Xibao, LIANG Jieneng, LIU Tianxi. Simulation and Experimental Study on the Effect of Large Granular Rocks in Lunar Soil on Drilling Load[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2019, 55(3): 397-404.

庞勇, 冯亚杰, 孙启臣, 赖小明, 王海元, 陈锡宝, 梁杰能, 刘天喜. 月壤大颗粒对钻进力载影响的仿真及实验研究[J]. 北京大学学报自然科学版, 2019, 55(3): 397-404.

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URL: https://xbna.pku.edu.cn/EN/10.13209/j.0479-8023.2019.008

https://xbna.pku.edu.cn/EN/Y2019/V55/I3/397

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