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Characterization of Underwater Explosive Loads of Blasting and Shaped Charges

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Blasting and shaped charges are the main forms of underwater weapons,and their near-field underwater explosions(UNDEX)can severely damage structures.Therefore,it is of great importance to study underwater explosive load characteristics of different forms of charges.The full physical process of a typical underwater explosion of a sphere/column blasting charge and a shaped charge was simulated using the Eulerian method.The loading characteristics of the underwater blast shock wave and bubble,as well as the projectile,were studied.The results show that the shock wave loads of spherical,cylindrical,and polygonal charges propagate outward in spherical,ellipsoidal-spherical and ellipsoidal-spherical wavefronts,respectively.When the shock wave reaches 16 times the distance-to-diameter ratio,its surface is approximately spherical.In addition,in the shaped charge underwater explosion,the shaped charge liner cover absorbs 30°-90° of the shock wave energy and some of the bubble energy to form a high-speed shaped penetrator.Spherical,ellipsoidal,and ellipsoidal bubbles are generated by underwater explosions of spherical,cylindrical,and shaped charges,respectively.The obtained results provide a reference for evaluating the power of underwater weapons.

Blasting chargeShaped chargeLoad characteristicsShock waveBubble

Zhifan Zhang、Hailong Li、Jingyuan Zhang、Longkan Wang、Guiyong Zhang、Zhi Zong

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State Key Laboratory of Structural Analysis,Optimization and CAE Software for Industrial Equipment,School of Naval Architecture Engineering,Dalian University of Technology,Dalian 116024,China

China Ship Research and Development Academy,Beijing 100192,China

Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Liaoning Excellent Youth Fund ProgramOpening Project of State Key Laboratory of Explosion Science and TechnologyLiaoning Revitalization Talents Program中央高校基本科研业务费专项中央高校基本科研业务费专项中央高校基本科研业务费专项

522713075206113510752192692118020252023JH3/10200012KFJJ21-09MXLYC1908027DUT20RC3025DUT20TD108DUT20LAB308

2024

10.1007/s11804-024-00422-5

哈尔滨工程大学学报(英文版)
哈尔滨工程大学

哈尔滨工程大学学报(英文版)

CSTPCD
影响因子：0.381
ISSN：1671-9433
年,卷(期)：2024.23(2)
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