为研究船舶受到水下爆炸冲击波打击后遭受气泡二次冲击，对船体产生破损甚至折断这一类问题，气泡与破损边界的相互作用机理。将破舱壁面简化为具有圆形破口的弹性壁面，基于CEL方法建立了破损边界附近水下爆炸气泡动力学模型，将数值结果与模型实验结果进行对比，验证了论文所建立方法的有效性。在此基础上，研究了气泡射流、气泡体积、脉动周期，以及气泡对壁面冲击损伤的影响，探明了不同破口参数下气泡的脉动规律和射流穿透破口、撕裂等特征规律。为高能武器的研发和舰船破损后安全防护提供理论和技术支撑。
Abstract
In order to study the damage or even fracture of ship hull caused by bubble secondary shock wave, the interaction mechanism between bubble and damaged boundary is studied. The damaged bulkhead is simplified as an elastic wall with a circular break. The bubble dynamics model of underwater explosion near the damaged boundary is established based on CEL method. The numerical results are compared with the model experimental results, which verify the effectiveness of the method established in this paper. On this basis, the effects of bubble jet, bubble volume, pulsating period and bubble on wall impact damage are studied, and the pulsating laws of bubbles under different break parameters and the characteristic laws of jet penetration, tear, etc. are proved. It provides theoretical and technical support for the research and development of high-energy weapons and the safety protection of damaged ships.
关键词
水下爆炸 /
气泡动力学 /
破损边界 /
流固耦合
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Key words
underwater explosion /
bubble dynamics /
Damaged boundary /
liquid-solid coupling
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参考文献
[1] CUI J, LI M Y, SUN S Y, et al. Experimental studies of bubble dynamics under a broken horizontal plate[J]. Ocean engineering, 2022,245(4):110459.
[2] CUI J, ZHOU T R, HUANG X, et al. Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary[J]. Ultrasonics Sonochemistry, 2021,75(6):105587.
[3] 贺铭,张阿漫,刘云龙. 近场水下爆炸气泡与双层破口结构的相互作用[J]. 爆炸与冲击, 2020,40(11):40-50.
HE Ming, ZHANG A-man, LIU Yun-long, Interaction of the underwater explosion bubbles and nearby double-layer structures with circular holes[J]. Explosion and Shock Waves, 2020,40(11):40-50.
[4] Huang X, Wang S P, Liu Y L, et al. Dynamic interaction of a bubble and discontinuous boundaries: A three-dimensional study with the fast multipole boundary element method[J]. Engineering Analysis with Boundary Elements, 2020, 110:1-15.
[5] 张之凡,谢宇杰,王成,等. 近自由面水下爆炸气泡与破损结构耦合作用机理研究[J]. 北京理工大学学报, 2022,42(09):909-917.
ZHANG Zhi-fan, Xie Yong-jie, WANG Cheng， et al. Coupling mechanism between damaged structure and underwater explosion bubble near free surface[J]. Transactions of Beijing Institute of Technology, 2022,42(09):909-917.
[6] 盛振新,刘建湖,毛海斌,等. 爆轰产物冲击带破口双层板结构内板壁压研究[J]. 水下无人系统学报, 2022,30(03):391-397.
SHENG Zhen-xin, LIU Jian-hu, MAO Hai-ben, et al. Study on the wall pressure generated by detonation products on the inner panel of a double-layer structure with a hole[J]. Journal of Unmanned Undersea Systems, 2022,30(03):391-397.
[7] 王莹,秦业志,王志凯等.不同类型炸药水下爆炸时冰层损伤特性研究[J].振动与冲击, 2022,41(09):189-198.
WANG Y, QIN Y Z, WANG Z K, et al. Damage charac-teristics of ice layer during underwater blasting of different types of explosives [J]. Journal of Vibration and Shock, 2022, 41(09):189-198.
[8] 刘云龙,王平平,王诗平,等.水下爆炸作用下舰船冲击毁伤的瞬态流固耦合FSLAB软件数值模拟分析[J].中国舰船研究,2022,17(05):228-240.
LIU Yun-long, WANG Ping-ping, WANG Shiping, et al. Numerical analysis of transient fluid-structure interaction of warship impact damage caused by underwater explosion using the FSLAB[J]. Chinese Journal of Ship Research, 2022,17(05):228-240.
[9] 王平平,张阿漫,彭玉祥,等. 近场水下爆炸瞬态强非线性流固耦合无网格数值模拟研究[J]. 力学学报,2022,54(08):2194-2209.
Wang Pingping, Zhang A-Man, Peng Yu-xiang, et al. Numerical simulation of transient strongly-nonlinear fluid-structure interaction in near-field underwater explosion based on meshless method[J]. Chinese Journal of Theoretical and Applied Mechanics,2022,54(08):2194-2209.
[10] 姜忠涛,李烨,庞学佳等. 近场水下爆炸气泡射流载荷冲击船体外板的动响应分析[J]. 振动与冲击, 2018,37(09):214-220.
JIANG Z T, LI B, PANG X J, et al. Dynamic response of hull plates subjected to near field underwater explo-sion bubble jet load[J]. Journal of Vibration and Shock, 2018, 37(09):214-220.
[11] CUI P, ZHANG A M, WANG S P. Small-charge underwater explosion bubble experiments under various boundary conditions[J]. Physics of Fluids, 2016, 28（11）：117103.
[12] 张阿漫,张帅. 高压气枪气泡动力学[M]. 北京:科学出版社,2020.
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