两点阵列爆炸威力场分布及增益研究  

Research on the Blast Power Field Distribution and Gain of Two-point Array Explosion

作　　者：冯海云[1] 胡宏伟[1] 肖川 李广嘉[1] 宋浦[1] FENG Hai-yun;HU Hong-wei;XIAO Chuan;LI Guang-jia;SONG Pu(Science and Technology Combustion and Explosion Laboratory,Xi′an Modern Chemistry Research Institute,Xi′an 710065,China;China Academy of Ordnance Science,Beijing 100089,China)

机构地区：[1]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065 [2]中国兵器科学研究院,北京100089

出　　处：《火炸药学报》2020年第3期345-350,I0006,共7页Chinese Journal of Explosives & Propellants

基　　金：国家重大专项资助。

摘　　要：为了获得两点阵列爆炸冲击波场的分布规律及其相对于同质量整体单点爆炸威力的增益效果,采用AU-TODYN有限元软件建立了两点阵列爆炸的计算模型,对不同阵列距离条件下两装药阵列爆炸的冲击波场进行了模拟研究,并对两个相距4 m的1 kg装药同时爆炸的计算结果进行了试验验证;分析了装药质量、阵列距离对冲击波威力及增益的影响规律,获得了两点阵列爆炸冲击波作用区面积与阵列距离的相互关系,建立了最佳阵列距离以及冲击波作用区面积增益的计算模型.结果表明,数值模拟结果与试验结果吻合较好,数值模型合理、方法可行;随着阵列距离的增大,两点阵列爆炸的冲击波作用区面积先增大后减小,最佳阵列距离与阵列爆炸单元的质量呈正比关系,函数关系式为L=2.078M1/3;阵列爆炸相对于同质量整体单点爆炸的威力增益显著,阵列距离6~10m范围内冲击波作用区面积增益大于29%;两点阵列爆炸冲击波作用区面积增益和阵列比例距离呈三次多项式函数关系,增益计算模型的预估误差不大于15%.To obtain the blast field distribution law of the two-point array explosion and its gain effect relative to the single-point explosion power with the same mass,the finite element software AUTODYN was appiled to establish the calculation model of the two-point array explosion,and the overpressure field was simulated for two charges at different array distances.The calculation results accuracy of two 1kg charges with 4m array distances was verified using experimental studies.The effects of charge mass and array distance on blast power and gain were analyzed.The correlation between the shock wave action region area and the array distance of the two-point array explosion was obtained,and the calculation models of the optimal array distance and shock wave action region area gain were established.The results show that the numerical simulation results are in good agreement with the experimental results.Therefore,the simulation model is reasonable,and the method is feasible.As the array distance increases,the shock wave action region area of the two-point array explosion increases first and then decreases.The optimal array distance is proportional to the mass of the array explosion,and the functional formula is L=2.078 M 1/3.The array explosion power has a significant gain relative to the single-point explosion with the same mass,and the shock wave action area gain is greater than 29%within the array distance range of 6-10 m.The relationship between the shock wave action area gain and the array proportional distance of the two-point array explosion is a cubic polynomial function,and the estimated error of the gain calculation model is not more than 15%.

关 键 词：爆炸力学 阵列爆炸 阵列距离 爆炸效果 作用区面积 增益 爆炸威力 冲击波 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O383[理学—流体力学]