冲击载荷作用下导弹战斗部装药起爆特性研究
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摘要
针对远程导弹在攻击地下目标过程当中时常发生对战斗部PBX炸药装药起爆毁伤效应估计不足情况,进而对导弹战斗部PBX炸药装药在高过载冲击载荷作用下的起爆响应特性进行研究。基于二级轻气炮,对导弹战斗部PBX炸药装药跨声速冲击载荷起爆特性进行一系列试验研究,结合试验结果、数值模拟、以及相关理论分析,探索能量释放行为与冲击载荷之间的相互关联,并建立相互影响机制模型。结果表明,PBX炸药装药的临界起爆压力为5.34 GPa,完全起爆压力为12.39 GPa;建立的能量释放量和相对反应率与冲击载荷之间的相互关系与试验数据基本吻合,研究结果可为国防防御技术研究提供一定的参考价值。
In the process of a long-range missile attacking underground target, its warhead PBX explosive charge's initiation damage effect is not enough estimated. Here, initiation characteristics of a missile warhead's PBX explosive charge under high overload impact load were studied. Based on a two-stage light gas cannon, a series of tests were performed for initiation characteristics of a missile warhead's PBX explosive charge under transonic speed impact load. Combining test results, numerical simulation and corresponding theoretical analysis, the correlation between energy release behavior and impact load was explored, and the mutual influence mechanism model was established. The results showed that the critical initiation pressure of PBX explosive charge is 5.34 GPa, and its full initiation pressure is 12.39 GPa; the established relation among energy release amount, relative reaction rate and impact load is basically in agreement with experimental data; the results can provide a reference for national defense technology studying.
In the process of a long-range missile attacking underground target, its warhead PBX explosive charge's initiation damage effect is not enough estimated. Here, initiation characteristics of a missile warhead's PBX explosive charge under high overload impact load were studied. Based on a two-stage light gas cannon, a series of tests were performed for initiation characteristics of a missile warhead's PBX explosive charge under transonic speed impact load. Combining test results, numerical simulation and corresponding theoretical analysis, the correlation between energy release behavior and impact load was explored, and the mutual influence mechanism model was established. The results showed that the critical initiation pressure of PBX explosive charge is 5.34 GPa, and its full initiation pressure is 12.39 GPa; the established relation among energy release amount, relative reaction rate and impact load is basically in agreement with experimental data; the results can provide a reference for national defense technology studying.
引文
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[2] 魏继锋,魏锦.端部起爆下空腔装药对离散杆驱动特性的影响研究[J].振动与冲击,2015,34(17):58-62.WEI Jifeng,WEI Jin.Effects of hollow cylindrical charge with one end initiation on driving characteristics of a discrete rod[J].Journal of Vibration and Shock,2015,34(17):58-62.
[3] LEE P W,CLEMENTS B,MA X,et al.Relating microstructure,temperature,and chemistry to explosive ignition and shock sensitivity[J].Combustion and Flame,2018,190:171-176.
[4] LI R,LI W B,WANG X M,et al.Effects of control parameters of three-point initiation on the formation of an explosively formed projectile with fins[J].Shock Waves,2018,28(2):191-204.
[5] ZHU Peng,GUAN Zhen,FU Shuai,et al.Firing and initiation characteristics of energetic semiconductor bridge integrated with varied thickness of Al/MoO3 nanofilms[J].Materials Science-Medziagotyra,2018,24(4):143-147.
[6] 梁增友,黄风雷,张震宇.PBX-9404的化学反应速率方程及起爆特性[J].爆炸与冲击,2008,28(1):38-43.LIANG Zengyou,HUANG Fenglei,ZHANG Zhenyu.Study on new reaction rate function model of PBX -9404 for damaged explosive initiation behaviour[J].Explosion and Shock Waves,2008,28(1):38-43.
[7] 黄明,李洪珍,徐容,等.高品质RDX的晶体特性及冲击波起爆特性[J].含能材料,2011,19(6):621-625.HUANG Ming,LI Hongzhen,XU Rong,et al.Evaluation of crystal properties and initiation characteristics of decreased sensitivity RDX[J].Chinese Journal of Energetic Materials,2011,19(6):621-625.
[8] 赵娟,冯晓军,徐洪涛,等.FOX-7和RDX基含铝炸药的冲击起爆特性[J].火炸药学报,2016,39(64):42-50.ZHAO Juan,FENG Xiaojun,XU Hongtao,et al.Shock initiation characteristics of FOX-7 and RDX based aluminized explosive[J].Chinese Journal of Explosives & Propellants,2016,39(64):42-50.
[9] 王桂吉,赵同虎,莫建军,等.一种以TATB/HMX为基的高聚物黏结炸药的短脉冲冲击起爆特性[J].爆炸与冲击,2007,27(3):230-234.WANG Guiji,ZHAO Tonghu,MO Jianjun,et al.Short-duration pulse shock initiation characteristics of a TATB/HMX-based polymer bonded explosive[J].Explosion and Shock Waves,2007,27(3):230-234.
[10] TARVER C M,CHIDESTER S K,NICHOLS A L.Critical conditions for impact- and shock-induced hot spots in solid explosives[J].Journal of Physical Chemistry,1996,100(14):5794-5799.
[11] ZEMAN S,ELBEIH A,HUSSEIN A,et al.A modified vacuum stability test in the study of initiation reactivity of nitramine explosives[J].Thermochimica Acta,2017,656:16-24.
[12] 蔡宣明.PBX 炸药动态力学行为及起爆特性研究[D].哈尔滨:哈尔滨工业大学,2015.
[13] 魏刚.金属动能弹变形与断裂特性及机理研究[D].哈尔滨:哈尔滨工业大学,2014.
[14] 任志俊,薛国祥.实用金属材料手册[M].南京:江苏科学技术出版社,2007:838-884.
[15] AMES R G.Energy release characteristics of impact-initiated energetic materials[J].Materials Research Society Symposium Proceedings,2006,18:21-24.