The Similarity Research on Underwater Explosion of Directional Warhead

doi:10.3969/j.issn.1000-1093.2014.09.001

Abstract

Abstract: In order to solve the problem of high expense in the underwater explosion of directional warhead, the similarity is researched by dimensional analysis. The aim is to research the relationship of explosion pressure between original and small scale models. The result of dimensional analysis is verified by the simulation of AUTODYN. As a result, if the mass of TNT in the small scale model is β³ times of that in original model, the peak pressure in original model is as same as that in the small scale at β times distance. It indicates that the small scale model can replace the original model if the similarity rule is used. This research provide the theoretical basis for underwater explosion experiment which uses the small scale model. It has engineering significance to some extent.

Key words: ordnance science and technology, underwater explosion, similarity, small scale, dimensional analysis, AUTODYN

CLC Number:

O382

RONG Ji-li， HE Xuan， XIANG Da-lin， BU Xiang-dong. The Similarity Research on Underwater Explosion of Directional Warhead[J]. Acta Armamentarii, 2014, 35(9): 1329-1334.

References

［1］ Shin Y S. Ship shock modeling and simulation for far-field underwater explosion [J]. Computers & Structures,2005, 82(23):2211-2219.
［2］ Hung C F, Hsu P Y，Hwang-Fuu J J. Elastic shock response of an air-backed plate to underwater explosion [J]. International Journal of Impact Engineering, 2005, 31(2):151-168.
［3］辛春亮,秦健,徐更光,等. 数值模拟软件在水下爆炸模拟中的应用研究[C]∥第四届全国爆炸力学实验技术学术会议论文集. 福建,武夷山：中国力学学会，2006:232-236.
XIN Chun-liang, QIN Jian, XU Geng-guang, et al. The application of the underwater explosion simulation of the numerical simulation software[C]∥The theses of fourth national conference on explosion mechanics experiment technology academic. Wuyishan, Fujian: The Chinese Society of Theoretical and Applied Mecha-nics, 2006:232-236.（in Chinese）
［4］安世亚太. ANSYS AUTODYN在水下爆炸模拟中的应用[J]. CAD/CAM与制造业信息化,2005,12(7):45-47.
ANSYS-CHINA. The application of underwater explosion simulation in ANSYS AUTODYN[J].Digital Manufacturing Industry, 2005,12(7):45-47.（in Chinese）
［5］ Molyneaux T C K, Li L Y, Firth N. Numerical simulation of underwater explosions[J]. Computers & Fluids,1994,23(7):903-911.
［6］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.（in Chinese）
［7］ ANSYS Company. AUTODYN Theory Manual［M］. US:ANSYS Company, 2000.
［8］谈庆明.量纲分析[M].合肥：中国科学技术大学出版社,2007:100-110.
TAN Qing-ming. Dimensional analysis[M]. Hefei: University of Science and Technology of China Press,2007:100-110.（in Chinese）
［9］鲁忠宝,南长江.水下战斗部定向起爆方式与威力场关系仿真研究[J].鱼雷技术,2007,15(6)：28-31.
LU Zhong-bao, NAN Chang-jiang. Simulation of relationship between directional detonation mode and power field for underwater warhead[J]. Torpedo Technology, 2007, 15(6)：28-31.（in Chinese）
［10］ LI J, RONG J L. Experimental and numerical investigation of the dynamic response of structures subjected to underwater explosion[J]. European Journal of Mechanics B/Fluids, 2012,32:59-69.
［11］项大林,荣吉利,李健,等.黑索今基含铝炸药的铝氧比对爆轰性能及其水下爆炸性能的影响[J].兵工学报,2013,34(1): 45-50.
XIANG Da-lin, RONG Ji-li, LI Jian, et al. Effect of Al/O ratio on detonation performance and underwater explosion of RDX-based aluminized explosive[J]. Acta Armamentarii, 2013, 34(1): 45-50.（in Chinese）
［12］辛春亮,徐更光,刘科种,等.含铝炸药Miller能量释放模型的应用[J].含能材料,2008,16(4):436-440.
XIN Chun-liang, XU Geng-guang, LIU Ke-zhong, et al. Application of Miller energy release model for aluminized explosive[J]. Chinese Journal of Energetic Materials, 2008, 16(4):436- 440. （in Chinese）

[1]	LIU Chun, OU Zhuocheng, DUAN Zhuoping, HUANG Fenglei. Hot Spot Temperature Resulting from Elliptical Void Collapse in PBX under Dynamic Loading and Its Semi-empirical Analytical Expression [J]. Acta Armamentarii, 2022, 43(1): 57-68.
[2]	DU Minggang， ZHANG Jinle, ZHANG Ximing, SUN Yadong, MAO Feihong. Measurement of the Wind Drag Coefficient of Tracked Armored Vehicles [J]. Acta Armamentarii, 2021, 42(7): 1564-1568.
[3]	XI Zhifei, XU An, KOU Yingxin, LI Zhanwu, YANG Aiwu. Air Combat Target Threat Assessment Based on Prospect Theory [J]. Acta Armamentarii, 2020, 41(6): 1236-1248.
[4]	XIE Shuchun， JIANG Chunlan， WANG Zaicheng， LU Guangzhao. Analysis of Similarity Law of Explosion in Multi-layer Concrete Medium [J]. Acta Armamentarii, 2019, 40(6): 1198-1206.
[5]	ZHAO Yao, YU Gang, HE Xiuli, LI Haiming, LI Shaoxia. Research on Laser Cladding Processing for 38MnVS6 by PCA-TOPSIS Method [J]. Acta Armamentarii, 2019, 40(12): 2537-2544.
[6]	QIU Wenhao, LIAN Guangyao, YANG Jinpeng, HUANG Kaoli. Optimal Selection of Failure Samples Based on Multiple Impact Factors and Importance [J]. Acta Armamentarii, 2019, 40(12): 2551-2559.
[7]	WU Wei, SU Juan. A SAR Scene Matching Algorithm Based on Bi-directional Matching Fusion [J]. Acta Armamentarii, 2019, 40(1): 124-133.
[8]	XU Xin-li， ZHANG Xin-ming， CAI Peng， YU Yang， ZHAO Li-xin. Simulation Experiment of Centrifugal Casting Based on 1∶80 Scale Reduction Experimental Machine [J]. Acta Armamentarii, 2018, 39(8): 1601-1606.
[9]	WANG Yun-ze, WANG Shu-shan, WEI Ping-liang, SHU Bin, LIANG Zhen-gang. Numerical Simulation and Analysis of Bore Premature of Armor Piercer Caused by Foreign Matter Obstruction [J]. Acta Armamentarii, 2018, 39(5): 859-866.
[10]	YU Jun， MING Zhen-jun， YAN Yan， WANG Guo-xin， HUANG Jing. Comprehensive Evaluation Method for Combat Effectiveness of Machine Gun Considering Interval Uncertainty [J]. Acta Armamentarii, 2018, 39(10): 2048-2055.
[11]	LI Ze, YAN Xiao-peng, LI Ping, HAO Xin-hong, WANG Jian-tao. Similarity-based Quantification Method for Anti-jamming Performance of Radio Fuze [J]. Acta Armamentarii, 2017, 38(7): 1282-1288.
[12]	LI Yong， CHENG Yuan-sheng， ZHANG Pan， LIU Jun. Numerical Research on Blast-resistant Performance of Graded Corrugated Sandwich Plates under Air Blast Loading [J]. Acta Armamentarii, 2017, 38(6): 1131-1139.
[13]	FANG Hao, LI Ai-hua, PAN Yu-long, WANG Xue-jin, JIANG Ke, WANG Hua. The Effect Evaluation of Infrared Camouflage Simulation System Based on Visual Similarity [J]. Acta Armamentarii, 2017, 38(2): 351-357.
[14]	ZHAO Qiang-qiang, HOU Bao-lin. Identification of Interval Uncertainty Parameters of a Howitzer Shell Transfer Arm [J]. Acta Armamentarii, 2017, 38(1): 35-42.
[15]	MAO Ming, WANG Jian-bing. Research on Influence of Breakwater on Hydrodynamic Characterisitics of Displacement Amphibious Vehicles [J]. Acta Armamentarii, 2016, 37(9): 1553-1560.