超高速长杆弹对岩石侵彻、地冲击效应理论与实验研究

doi:10.13722/j.cnki.jrme.2017.1348

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Abstract The problems of hyper speed impact effect on the ground are pointed out in this paper regarding the penetration and ground impact effects of hyper speed projectile. The theory of elastic-plastic fluid and internal friction penetration was applied to study the hydrodynamic model，so as to expound the essential relationship and difference between the penetrations of hyper speed projectile and conventional ground penetrating bomb，and also to define the range of the speed of hyper speed penetration. It was found that with the increasing of penetration speed，the target medium was transformed from the elastic-plastic state to the internal friction state，then to the fluid dynamic state. The mechanical phenomena of hyper speed penetration characteristics were also presented，such as the penetration depth reversal due to the mass abrasion of projectile，and the penetration depth tending to the limit as a result of the projectile erosion. The methods to calculate the depth and crater range of hyper speed penetration were presented.

Key words： rock mechanics hypervelocity kinetic energy projectile state equation under high pressure fluid elastic-plastic theory crater effect

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	Articles by authors
	WANG Mingyang1
	2
	QIU Yanyu1
	2
	LI Jie2
	LI Haibo3
	ZHAO Zhangyong2

Cite this article:

WANG Mingyang1,2,QIU Yanyu1, et al. Theoretical and experimental study on penetration in rock and ground impact effects of long rod projectiles of hyper speed[J]. , 2018, 37(3): 564-572.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.1348 OR http://www.rockmech.org/EN/Y2018/V37/I3/564

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