Dynamics of a projectile penetrating in granular systems

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	Dynamics of a projectile penetrating in granular systems
	Hou, M ; Peng, Z ; Liu, R ; Lu, K ; Chan, CK
刊名	PHYSICAL REVIEW E
	2005
卷号	72 期号:6
关键词	SAND
ISSN号	1539-3755
通讯作者	Hou, M: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100080, Peoples R China.
中文摘要	The impact of a sphere with velocity u(0) on a fine, loose granular system under the acceleration due to gravity has been studied by fast video photography. The behavior of the granular bed is found to be similar to a fluid during initial impact, followed by a cavity drag during projectile penetration. From the trajectory of the projectile it is found that the drag on the projectile can be well described by adding a bulk frictional force f to the hydrostatic force kappa z where kappa is a constant and z denotes the penetration depth. Both kappa and f are u(0) dependent. This form of the drag force suggests that fluidlike viscous dissipations in the bed can be neglected in these three-dimensional (3D) experiments. However, due to the imposed boundary this hydrodynamic term of the drag force is found to be not negligible in quasi-2D granular beds.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36291]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Hou, M,Peng, Z,Liu, R,et al. Dynamics of a projectile penetrating in granular systems[J]. PHYSICAL REVIEW E,2005,72(6).
APA	Hou, M,Peng, Z,Liu, R,Lu, K,&Chan, CK.(2005).Dynamics of a projectile penetrating in granular systems.PHYSICAL REVIEW E,72(6).
MLA	Hou, M,et al."Dynamics of a projectile penetrating in granular systems".PHYSICAL REVIEW E 72.6(2005).