Abstract
The formation and influence of initiation manners on a linear-shaped charge (LSC) jet were studied through experimentation and numerical simulation. An X-ray was adopted to observe the formation process of LSC jet, and simultaneous axial stretch and edge expansion were observed in the formation. The cause of the end effect, and the influence of single end point initiation, central point initiation, two end point initiation, and time difference were discussed. Numerical simulation indicated that the end effect was caused by a combination of jet expansion in the edge direction and the “erosion” of end rarefaction waves, which could be eliminated by increasing the charge length. The jet initiated via single-point initiation produced the highest expansion velocity at the detonation termination end, and the jet initiated in two-point initiation produced the highest jet tip velocity. The initial spherical wave of central-point initiation had the effect of energy accumulation similar to conical charge, and the central jet exhibited high jet tip velocity. Central-point initiation is the most powerful in terms of general penetration ability. The penetration performance of the jet with time difference initially decreased and then increased with increasing Δt and when the general deflection was the smallest, the crack was the most symmetric.
Similar content being viewed by others
References
Chou PC, Flis WJ (1986) Recent developments in shaped charge technology. Wiley, Amsterdamy
David N, Meryl M (2007) Historical development of linear shaped charge. 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Cincinnati, OH
Arnold W, Rottenkolber E (2009) High explosive initiation behavior by shaped charge jet impacts. Proc Eng 36(1):147–153
Lee JHS (2008) The detonation phenomenon. Cambridge University Press, Cambridge
Feng DL, Liu MB, Li HQ, Liu GR (2013) Smoothed particle hydrodynamics modeling of linear shaped charge with jet formation and penetration effects. Comput Fluids 86:77–85
Lim S (2013) Steady state analytical equation of motion of linear shaped charges jet based on the modification of birkhoff theory. J Appl Phys 3:35–45
Lim S (2012) Steady state equation of motion of a linear shaped charges liner. Int J Impact Eng 44:10–16
Lim S (2013) Jet velocity profile of linear shaped charges based on an arced liner collapse. J Energ Mater 31(4):239–250
Ruijun G, Guozhi Z (2006) Comparison of linear shaped charge initiation manners. Initiators Pyrotech 2006:42–45 (in Chinese)
Jiankun YI, Tengfang WU, Weiguo XIA (2005) Analysis on the causes weakening the cutting ability of linear shaped charge. Initiators Pyrotech 3:47–50 (in Chinese)
JianKun YI, Xinquan JIANG, Hao P (2009) Effect of initiation manners on jet formation of liner shaped charge. Chin J Explos Propell 29:57–61 (in Chinese)
Hull L, Gray G, Faulkner J et al (2014) Damage in low alloy steel produced by sweeping, interacting detonation waves. J Phys Conf Ser 500:112034
Barlow AJ (2008) Challenges and recent progress in developing numerical methods for multi-material ALE Hydrocodes. ICFD 25 Year Anniversary Conference
Singh M, Suneja HR, Bola MS et al (2002) Dynamic tensile deformation and fracture of metal cylinders at high strain rates. Int J Impact Eng 27:939–954
Jie LIU, Zhong-hua DU, Feng WANG et al (2014) Liner explosively-formed penetrators based on detonation wave collsion. Eng Mech 31:235–242 (in Chinese)
Chong Ji, Yuan L, Yang Xu, Jianqing L et al (2004) Study on application of linear shaped charge cutters in engineering blasting. Explos Mater 33:32–35 (in Chinese)
YaoHua WANG, Wei XIONG, ZhiFu CHEN et al (2012) A liner shaped charge neutron radiography precise detection scheme. J Theor Appl Inf Technol 46:142–146
Barras G, Souli M, Aquelet N et al (2012) Numerical simulation of underwater explosions using an ALE method. The pulsating bubble phenomena. Ocean Eng 41:53–66
Bohanek V, Dobrilović M, Škrlec V (2014) The efficiency of linear shaped charges. Tehnički vjesnik 21(3):525–531
Hong-fu QIANG, Kun-peng WANG, Wei-ran GAO (2008) Numerical simulation of shaped charge jet using multi-phase SPH method. Trans Tianjin Univ 14(1):495–499
Feng HAN, Yang HU, Han ZHANG (2009) Numerical simulation of the shaped charge jet velocity effected by warhead shell. J Beijing Inst Technol 18:131–135
Hussain G, Hameed A, Horsfall I, Barton P, Malik AQ (2012) Experimental and simulation optimization analysis of the Whipple shields against shaped charge. Acta Mech Sin 28(03):877–884
Wang C, Ding J, Zhao H (2015) Numerical simulation on jet formation of shaped charge with different liner materials. Defence Sci J 65(4).
Fua J-P, Chena Z-G, Houa X-C et al (2013) Simulation and experimental investigation of jetting penetrator charge at large standoff distance. Defense Technol 9:91–97
Hazell PJ, Edwards MR, Longstaff H et al (2009) Penetration of a glass-faced transparent elastomeric resin by a lead–antimony-cored bullet. Int J Impact Eng 36:147–153
Zou T, Ren Q, Peng Y et al (2013) Numerical simulation of X90 UOE pipe forming process. AIP Conf, Proc
Chu C, Jiang D (1980) On the motion of flying plate under explosive attack. Appl Math Mech 293–304
Li W (2003) One-dimensional nonstable flow and shock wave. National Defense Industry Press, Beijing, pp 123–125
Schoch S, Nordin-Bates K, Nikiforakis N (2013) An Eulerian algorithm for coupled simulations of lastoplastic-solids and condensed-phase explosives. J Comput Phys 252:163–194
Raymond, RMG (1975) An investigation of Chapman–Jouget detonation theory using isotopic labeling. PN Press
Hoggatit CR (1968) Fracture behaviour of tubular bombs. J Appl Phys 39:1856–1862
Chen G, Ren C, Yang X, Guo T (2011) Evidence of thermoplastic instability about segmented chip formation process for Ti-6Al-4V alloy based on the finite-element method. Proc Inst Mech Eng 225(6):1407–1417 (in Chinese)
Acknowledgements
This research was supported by the National Natural Science Foundation of China Nos. 51678567. The authors would like to gratefully acknowledge this support.
Author information
Authors and Affiliations
Corresponding author
Additional information
Technical Editor: João Marciano Laredo dos Reis.
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
About this article
Cite this article
Ji, C., Sun, Y., Wu, J. et al. Numerical and experimental study of the formation and penetration of an LSC jet in different initiation manners. J Braz. Soc. Mech. Sci. Eng. 42, 300 (2020). https://doi.org/10.1007/s40430-020-02337-y
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s40430-020-02337-y