Shockwave Characteristics of Shaped Charge Exploded Underwater
-
摘要: 对聚能装药水下爆炸近区压力分布进行了实验研究,将其结果与数值计算结果进行比较,验证了计算模型及方法的可靠性;利用数值计算方法研究了聚能装药水下爆炸冲击波的分布规律、不同装药形式冲击波的传播以及能量的分布。结果表明:水中近场冲击波具有较强的不均匀性,侵彻体前端的水介质中有较强的压力扰动,对正向冲击波有增强作用,等压线呈不规则形状,近场冲击波阵面呈“梨形”演化。Abstract: In this research, to investigate the pressure distribution of the shaped charge explosive in the underwater near-field, we conducted both experimental studies and numerical simulation and, by comparing the results from the simulation with those from the experiments, validated both the numerical model and the computation.We used the numerical method to investigate the distribution and propagation of the shockwave and the energy in underwater explosion by the shaped charge.The results show that the distribution of the shockwave in the near field is non-uniform and the isopiestic is irregular; the pressure disturbance of the water in front of the shaped charge penetrator is significant, which enhances the positive blast wave; and the evolution of the wave front in the near field is pear-shaped.
-
Key words:
- shaped charge /
- underwater explosion /
- blast wave /
- measurement
-
表 1 实验测试方案
Table 1. Experimental scheme
Exp. No. Measurement point 1 P1, P2, P3, P4, P5, P6 2 P1, P2, P3, P4, P5, P6 3 P1, P2, P3, P5, P7, P8 表 2 实验结果统计
Table 2. Experiment results
Exp. No. Peak pressure/(MPa) P1 P2 P3 P4 P5 P6 P7 P8 1 996 927 784 304 1012 291 2 1003 896 770 332 1015 306 3 1008 843 800 1000 3239 3129 Average 1002 889 785 318 1009 299 3184 表 3 数值计算与实验测量冲击波压力峰值对比
Table 3. Peak pressure comparison of numerical calculation and experiment
Measurement point Peak pressure/(MPa) Relative error/(%) Measurement (Avg.) Simulation P1 1002 1112 11.0 P2 889 915 2.9 P3 785 747 5.1 P4 318 283 11.0 P5 1009 1113 9.3 P6 299 297 0.7 P7(P8) 3184 3664 15.1 -
[1] 威廉·普·沃尔特斯, 乔纳斯·埃·朱卡斯.成型装药原理及其应用[M].王树魁, 贝静芬, 译.北京: 兵器工业出版社, 1992.WALTERS W P, ZUKAS J E.Principle and application of shaped charge[M]. Translated by WANG S K, BEI J F.Beijing: Ordnance Industry Press, 1992. [2] 王海福, 江增荣, 俞为民, 等.杆式射流装药水下作用行为研究[J].北京理工大学学报, 2006, 26(3):189-192. doi: 10.3969/j.issn.1001-0645.2006.03.001WANG H F, JIANG Z R, YU W M, et al.View of armored equipment battle behavior of jetting penetrator charge operating damage[J]. Transactions of Beijing Institute of Technology, 2006, 26(3):189-192. doi: 10.3969/j.issn.1001-0645.2006.03.001 [3] 亨利奇J.爆炸动力学及其应用[M].熊建国, 译.北京: 科学出版社, 1987: 154.HENRYCH J.Dynamics of explosion and its applications[M]. Translated by XIONG J G.Beijing: Science Press, 1987: 154. [4] 赵峰, 王彦平, 龚晏青, 等.水中射流运动的观测[C]//第四届全国爆炸力学实验技术学术会议, 2006: 319-322. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-AHLX200610001052.htmZHAO F, WANG Y P, GONG Y Q, et al.Measurement of the jets movement underwater[C]//The 4th National Conference of Experimental Technology in Explosion Mechanics, 2006: 319-322. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-AHLX200610001052.htm [5] 石秀华, 许晖, 韩鹏, 等.水下武器系统概论[M].西安:西北工业大学出版社, 2014.SHI X H, XU H, HAN P, et al.A survey of the underwater weapon system[M]. Xi'an:Nothwest Polytechnic University Press, 2014.