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Liner configuration of explosively formed projectile warheadwith large wave shaper(PDF)


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Liner configuration of explosively formed projectile warheadwith large wave shaper
Zu XudongHuang ZhengxiangZhu Chuansheng
School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
explosion mechanism explosively formed projectile warhead liner Mach wave wave shaper
An analytical model for calculating the collapse velocity of a liner element under the impact of Mach wave is proposed based on the characteristics of detonation wave transmitting in a charge embedded wave shaper of explosively formed projectile(EFP)to research the liner configuration.The theoretical results show that,local thickening of the liner top can reduce the collapse velocity of the top element significantly and avoid the damage at the nose of the EFP; the overmuch increment of the thickness of the liner top leads to droplets and hollows,and is adverse to the stability and the penetration capability of the EFP.The simulations reveal that,the EFP initial velocity and length-diameter ratio are barely decreased due to thickening the top of the liner; the thickness increment between 12.5% and 25.0% can inhibit the damage at the nose of the EFP and avoid droplets and hollows.The X-ray results are identical to the simulation results reasonably well.


[1] Weimann K.Research and development in the area of explosively formed projectiles charge technology[J].Propellants,Explosive,Pyrotechnics,1993,18(5):294-298.
[2]Murphy M,Weimann K,Doeringsfeld K,et al.The effect of explosive detonation wave shaping on EFP shape and performance[C]//13th International Symposium on Ballistics.Stockholm,Sweden:National Defence Research Establishment,1992:449-456.
Men Jianbing,Jiang Jianwei,Luo Jian.Numerical simulation research on the influence of sensing elements on EFP forming[J].Journal of Ballistics,2005,17(1):67-71.
Yuan Zhihua,Wang Guangcheng,Li huibin,et al.Warheads EFP forming effects of medicine cover type parameters on suspension ray plays[J].Journal of Ordnance Equipment Engineering,2016(11):1-5.
Tong Zongbao,Wang Xiaochun,Cheng Jian,et al.Study on numerical simulation of M shaped charged liner form annular jet[J].Journal of Ordnance Equipment Engineering,2016(3):143-145.
Zhang Xianfeng,Chen Huiwu,Zhao Youshou.Study on shaped charge technique of small diameter which have high velocity EFP[J].Journal of Projectiles,Rockets,Missiles and Guidance,2003,23(3):107-109.
[7]Zhang Y G,Zhang Xianfeng,He Yadong,et al.Detonation wave propagation in shaped charges with large wave-shaper[C]//27th International Symposium on Ballistics.Freiburg,Germany:International Ballistics Society,2013:770-782.
[8]Steinmann F,L?sch C.Multimode warhead technology studies[C]//21th International Symposium on Ballistics.Adelaide,Australia:Australian Government Department of Defence Science and Technology Organization,2004:728-735.
Zhang Chongyu,Gu Yan,Li Qingzhong,et al.Study on deformation characteristies of collision region of copper tube with guard ring driven by two head-on colliding detonation waves[J].Explosion and Shock Waves,2007,27(2):97-102.
[13]Murphy M J,Lee E L.Modeling shock initiation composition B[C]//10th International Symposium on Ballistics.Freiburg,Germany:American Defense Preparedness Association,2013:770-782.
[14]Wu Jun,Liu Jingbo,Du Yixin.Experimental and numerical study on the flight and penetration properties of explosively-formed projectile[J].International Journal of Impact Engineering,2007,34(7):1147-1162.


Last Update: 2017-12-31