Dynamics of a projectile penetrating in granular systems | |
Hou, M ; Peng, Z ; Liu, R ; Lu, K ; Chan, CK | |
刊名 | PHYSICAL REVIEW E
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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). |
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