Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2019, Vol. 55 ›› Issue (3): 397-404.DOI: 10.13209/j.0479-8023.2019.008

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

PANG Yong1,†, FENG Yajie2, SUN Qichen1, LAI Xiaomin1, WANG Haiyuan1, CHEN Xibao1, LIANG Jieneng3, LIU Tianxi3   

  1. 1. Beijing Spacecrafts, Beijing 100090 2. College of Engineering, Peking University, Beijing 100871 3. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150000
  • Received:2018-04-10 Revised:2018-08-08 Online:2019-05-20 Published:2019-05-20
  • Contact: PANG Yong,E-mail:py82(at)163.com

月壤大颗粒对钻进力载影响的仿真及实验研究

庞勇1,†, 冯亚杰2, 孙启臣1, 赖小明1, 王海元1, 陈锡宝1, 梁杰能3, 刘天喜3   

  1. 1. 北京卫星制造厂有限公司, 北京 100090 2. 北京大学工学院, 北京 100871 3. 哈尔滨工业大学机电工程学院, 哈尔滨 150000
  • 通讯作者: 庞勇,E-mail:py82(at)163.com
  • 基金资助:
    国家自然科学基金(11502277, 51475452)资助

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