| Smoothed particle hydrodynamics modeling of linear shaped charge with jet formation and penetration effects | |
Feng DL(冯殿垒) ; Liu MB(刘谋斌); Li HQ; Liu GR; Liu, MB (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
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| Source Publication | COMPUTERS & FLUIDS
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| 2013-11-05 | |
| Volume | 86Pages:77-85 |
| ISSN | 0045-7930 |
| Abstract | Shaped charge, as a frequently used form of explosive charge for military and industrial applications, can produce powerful metal jet and lead to stronger penetration effects onto targets than normal charges. After the explosion of high explosive (HE) charge, the detonation produced explosive gas can exert tremendous pressure on surrounding metal case and liner with very large deformation and even quick phase-transition. In this paper, the entire process of HE detonation and explosion, explosion-driven metal deformation and jet formation as well as the penetrating effects is modeled using a smoothed particle hydrodynamics (SPH) method. SPH is a Lagrangian, meshfree particle method, and has been widely applied to different areas in engineering and science. A modified scheme for approximating kernel gradient (kernel gradient correction, or KGC) has been used in the SPH simulation to achieve better accuracy and stability. The modified SPH method is first validated with the simulation of a benchmark problem of a TNT slab detonation, which shows accurate pressure profiles. It is then applied to simulating two different computational models of shaped-charge jet with or without charge cases. It is found that for these two models there is no significant discrepancy for the length and velocity of the jet, while the shapes of the jet tip are different. The modified SPH method is also used to investigate the penetrating effects on a steel target plate induced by a linear shaped charge jet. The effectiveness of the SPH model is demonstrated by the good agreement of the computational results with experimental observations and the good energy conservation during the entire process. |
| Keyword | Shaped-charge Jet Smoothed Particle Hydrodynamics (Sph) Penetration Kernel Gradient Correction |
| Subject Area | 爆炸力学 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000325834300008 |
| Funding Organization | National Natural Science Foundation of China [11172306]; National Defense Innovation Funds of the Chinese Academy of Sciences [Y175031XML] |
| Department | LMFS冲击与耦合效应(LHO) |
| Classification | 二类/Q2 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47515 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Liu, MB (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Feng DL,Liu MB,Li HQ,et al. Smoothed particle hydrodynamics modeling of linear shaped charge with jet formation and penetration effects[J]. COMPUTERS & FLUIDS,2013,86:77-85. |
| APA | 冯殿垒,刘谋斌,Li HQ,Liu GR,&Liu, MB .(2013).Smoothed particle hydrodynamics modeling of linear shaped charge with jet formation and penetration effects.COMPUTERS & FLUIDS,86,77-85. |
| MLA | 冯殿垒,et al."Smoothed particle hydrodynamics modeling of linear shaped charge with jet formation and penetration effects".COMPUTERS & FLUIDS 86(2013):77-85. |
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