月壤采样管贯入阻力建模与颗粒迁移分析

doi:10.3724/1000-6915.jrme.2025.0919

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Abstract Supporting the design and performance prediction of lunar surface sampling systems, this study systematically investigates the axial resistance characteristics of coring tubes under direct and rotational penetration modes. Based on the bearing capacity theory of hollow pipe piles, a semi-empirical model for direct penetration is developed that accounts for the influence of wall thickness in small-diameter coring tubes. An experimental platform is established to measure the axial resistance force and sampling performance of coring tubes with varying geometric dimensions during penetration to a depth of 80?mm. Experimental results validate the model and reveal that annular resistance constitutes the dominant component. For rotational penetration, the dependence of the macroscopic friction coefficient on shear rate in the particle-metal interface is introduced. Theoretical and experimental evidence confirms that rotation significantly reduces axial resistance and improves both sampling success rate and sample length. Discrete element simulations using PFC elucidate the microscopic evolution of lunar soil particle flow and soil plug formation during rotational penetration, revealing the key factors governing sampling success. This study provides a theoretical basis and experimental support for structural design, actuator selection, and drilling parameter optimization in lunar surface sampling systems.

Key words： soil mechanics lunar sampling lunar regolith simulant soil plug effect discrete element method coring rate

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	Articles by authors
	ZOU Shiyue1
	2
	YANG Jiafeng1
	2
	YUAN Zihao2
	ZHAO Haifeng1
	2*
	LI Xihan2
	HAN Rujin2
	NING Zhitao2
	WANG Ke2

Cite this article:

ZOU Shiyue1,2,YANG Jiafeng1, et al. Resistance model of lunar regolith coring tube during penetration and particle transport mechanism[J]. , 2026, 45(9): 2796-2810.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2025.0919 OR https://rockmech.whrsm.ac.cn/EN/Y2026/V45/I9/2796

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