高速弹体穿透铝合金靶板液舱速度衰减特性研究  

Research on Velocity Decay of Projectiles Aluminum Alloy Target Penetrating Liquid Cabin

作　　者：王卓[1,2] 张朴[1] 孔祥韶[1] 吴卫国[1] WANG Zhuo;ZHANG Pu;KONG Xiangshao;WU Weiguo(Green&Smart River-Sea-Going Ship,Cruise and Yacht Research center,Wuhan University of Technology,Wuhan 430063,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学绿色智能江海直达船舶与邮轮游艇研究中心,武汉430063 [2]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《中国造船》2022年第1期65-76,共12页Shipbuilding of China

基　　金：装备预研教育部联合基金(6141A02033108)

摘　　要：为了研究液舱对高速弹体的防护机制,开展了高速弹体穿透液舱过程速度衰减特性的研究。在液舱弹道冲击试验的基础上,分析了液舱后靶板变形对弹体水中运动速度衰减效应的影响。以能量分析为基础,综合弹体穿甲运动方程和弹体在流场中运动速度衰减的规律,建立了简化分析模型,并推导了弹体侵彻液舱后的剩余速度公式。该模型综合考虑了前靶板背水、后靶板变形以及弹体墩粗对弹速衰减的影响。还针对试验中不同铝合金靶板厚度提出了两种弹体穿甲计算模型。计算结果表明:弹体撞击背水靶板时消耗更多能量;由于液舱后靶板的变形,弹体在水中运动的实际距离要大于初始液舱宽度,使得弹体的剩余速度进一步减小;弹体撞击中厚靶板会出现墩粗变形,从而增加了其在水中运动时的阻力。弹体剩余速度的理论模型与试验结果比较接近,文中给出了误差分析。In order to study the protective mechanism of a liquid cabin penetrated by high velocity projectiles, an analytical model is presented based on ballistic tests. Based on energy conservation theory and combined with the perforation motion equation and the energy dissipation characteristics., a simplified model for residual velocity of projectiles traveling in the fluid is derived. Effects of the water-backed bulkhead, deformation of the back bulkhead and mushrooming deformation of the projectiles are considered. It is shown that the water-backed bulkhead absorbs more energy than the air-backed bulkhead. Deformation of the back bulkhead results in additional traveling distance for projectiles. Mushrooming deformation of projectiles will lead to higher resistance coefficient. Results from the analytical model are in good agreement with experimental data,and a reasonable analysis of the error is put forward.

关 键 词：液舱 高速弹体 铝合金板 理论模型 

分 类 号：U674.70[交通运输工程—船舶及航道工程] U661.4[交通运输工程—船舶与海洋工程]