Initiation theory of shield explosive impacted by underwater explosion shock wave and its simulation
LI Yuanlong1, WANG Jinxiang1, SHEN Xiangjun2, ZHOU Nan3, HUANG Ruiyuan1, RONG Guang1
1.National Key Lab of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China;
2. 753 Factory, Jinxi Industrial Group, Taigu 030800, China;
3. Department of Criminal Science and Technology, Nanjing Forest Police College, Nanjing 210023, China
Abstract:The initiation problem of shielded explosive impacted by underwater explosion shock wave was studied. The method of calculating the impact pressure of underwater explosion shock wave on shielded charge was established theoretically. Combining the explosive initiation criterion, the critical condition for explosive impact initiation was determined. The simulation software AUTODYN was used to numerically simulate the process of underwater explosion shock wave impacting and initiating shielded charge. The effects of main dose and shield baffle thickness on explosive critical initiation were analyzed. The least square method was used to obtain parameters n and K of the theoretical critical initiation criterion, and they were compared with those of the initiation criterion published in literature. The results showed that the theoretical results agree well with those published in literature within a certain range; the error between theoretical calculation results and numerical simulation ones is not more than 6.75%, so the established theoretical calculation method is effective; under the same conditions, with increase in main dose and decrease in shield baffle thickness, the critical initiation distance of shield explosive impacted by underwater explosion shock wave drops.
李元龙1 王金相1 身向军2 周楠3 黄瑞源1 荣光1. 水下爆炸冲击波作用下屏蔽装药的冲击引爆理论和仿真研究[J]. 振动与冲击, 2019, 38(11): 31-36.
LI Yuanlong1, WANG Jinxiang1, SHEN Xiangjun2, ZHOU Nan3, HUANG Ruiyuan1, RONG Guang1. Initiation theory of shield explosive impacted by underwater explosion shock wave and its simulation. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(11): 31-36.
[1] 钱东, 张少悟. 鱼雷防御技术的发展与展望[J]. 鱼雷技术, 2005, 13(2):1-6.
QIAN Dong, ZHANG Shao-wu. History and Developmental Trend of Torpedo Defense Technologies[J]. Torpedo Technology, 2005, 13(2):1-6.
[2] Cole. 水下爆炸[M]. 国防工业出版社, 1960.
Cole. Underwater Explosion[M]. National Defence Industry Press, 1960.
[3] Zamyshlyayev B V. Dynamic Loads in Underwater Explosion[R]. AD-757183, 1973
[4] 陈卫东, 张忠, 刘家良. 破片对屏蔽炸药冲击起爆的数值模拟和分析[J]. 兵工学报, 2009, 30(9):1187-1191.
CHEN Wei-dong, ZHANG Zhong, LIU Jia-liang. Numerical Simulation and Analysis of Shock Initiation of Shielded Explosive Impacted by Fragments[J]. Acta Armamentarii, 2009, 30(9): 1187-1191.
[5] 童宗保, 王金相, 彭楚才,等. 预制破片对屏蔽炸药冲击引爆研究[J]. 科学技术与工程, 2014, 14(7):173-177.
TONG Zong-bao, WANG Jin-xiang, PENG Chu-cai, et al. Study on the Initiation of Shielded Explosive Impacted by Prefabricated Fragment[J]. Science Technology and Engineering, 2014,14(7):173-177.
[6] 濮赞泉, 李文彬, 郑宇,等. 柱形破片冲击带壳装药起爆判据研究[J]. 兵工自动化, 2016(2):62-65.
PU Zan-quan, LI Wen-bin, ZHENG Yu, et al. Study on the detonation criterion of cylindrical shell fragments under impact of cylindrical fragments [J]. Ordnance Industry Automation, 2016 (2): 62-65.
[7] 陈文, 胡晓东,等. 某新型炸药冲击起爆试验与临界起爆特性研究[J]. 火工品, 2009(2):5-8.
CHEN Wen, HU Xiao-dong, et al. Experimental Study on Impact Initiation Characteristics of A New Explosive[J].Initiators and Pyrotechnics, 2009(2):5-8.
[8] 明路遥, 李昌坤, 程波,等. 爆炸冲击波作用下屏蔽装药模型起爆判据研究[J]. 兵器装备工程学报, 2016, 37(4):95-97.
MING Lu-yao, LI Chang-kun, CHENG Bo, et al. Research on Initiation Criterion of Covered Charge Model Loaded by Explosive Shock Wave[J]. Journal of Sichuan Ordnance,2016, 37(4):95-97.
[9] 王瑞峰, 张振宇. PBX-9404炸药短脉冲冲击波起爆的数值模拟[C]// 全国爆轰学术会议. 2003.
Wang Ruifeng, Zhang Zhenyu. Numerical simulation of PBX-9404 explosive short-pulse shock initiation [C] // National Detonation Symposium, 2003.
[10] 杜茂华, 王伟力, 黄勇,等. 舰载超近程反导弹药冲击引爆战斗部的研究[J]. 工程爆破, 2012, 18(2):14-17.
DU Mao-hua, WANG Wei-li, HUANG Yong, et al. Research on Impacting and Igniting Warhead by Super Close-in Anti-Missile Ammunition on Board[J]. Engineering Blasting, 2012, 18(2): 14-17.
[11] 李维新. 一维不定常流与冲击波[M]. 国防工业出版社, 2003.
LI Wei-xin. One-dimensional Unsteady Flow and Shock Wave[M]. National Defence Industry Press, 2003.
[12] 赵锋, 孙承纬, 卫玉章. 非均质固体炸药的冲击引爆临界能量判据研究[J]. 爆炸与冲击, 1993(1):41-48.
ZHAO Feng, SUN Cheng-wei, WEI Yu-zhang. Critical Energy Criterion for Shock Initiation of Heterogeneous Explosives[J]. Explosion and Shock Waves, 1993(1):41-48.
[13] 王瑞峰, 卢芳云, 阳志光,等. 保护罩内冲击波衰减规律研究[J]. 弹箭与制导学报, 2008, 28(5):267-270.
WANG Rui-feng, LU Fang-yun, YANG Zhi-guang, et al. Investigation of Shock Wave Attenuation in Retainer[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2008,28(5):267-270.
[14] AUTODYN Users Manual Revision 4.3 [CP]. San Ramon .CA94583 .US: Century Dynamics Incorporated, 2003.
[15] 肖秋平, 陈网桦, 贾宪振,等. 基于AUTODYN的水下爆炸冲击波模拟研究[J]. 舰船科学技术, 2009, 31(2):38-43.
XIAO Qiu-ping, CHEN Wang-hua, JIA Xian-zhen, et al. Numerical study of underwater explosion shock wave based on AUTODYN[J]. Ship Science and Technology, 2009,31(2):38-43.
[16] Lee E L, Tarver C M. Phenomenological model of shock initiation in heterogeneous explosives [J]. Physics of Fluids, 1980, 23(12):2362-2372.