高速破片侵彻液舱的速度衰减特性  

Velocity Attenuation Characteristics of High-velocity Fragments Penetrating Liquid Tank

作　　者：王卓[1,2] 孔祥韶[1] 吴卫国[1] WANG Zhuo;KONG Xiangshao;WU Weiguo(Green&Smart River-Sea-Going Ship,Cruise and Yacht Research Center,Wuhan University of Technology,Wuhan 430063,Hubei,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,Hubei,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,湖北武汉430063 [2]武汉理工大学船海与能源动力工程学院,湖北武汉430063

出　　处：《兵工学报》2021年第S01期167-172,共6页Acta Armamentarii

基　　金：装备预先研究教育部联合基金青年人才项目(6141A02033108)。

摘　　要：为分析高速破片侵彻液舱速度衰减特性,开展不同形状破片高速侵彻系列仿真研究。仿真模型包含方形破片、球形破片、平头破片、圆头破片4种不同破片形状,并模拟了各种形状破片在不同初始速度下的速度衰减过程。仿真结果与文献[14]中的试验结果进行对比,验证了仿真方法在超空泡条件下预报破片速度衰减的准确性。对仿真速度衰减结果进行分析,结合破片速度衰减理论公式,获得各计算工况下破片速度衰减阻力系数。通过对比破片阻力系数发现:球形和圆头破片较方形和平头破片有着更小的阻力系数和更强的侵彻性能;相同形状破片阻力系数随着破片尺寸参数的增大而逐渐减小。A series of numerical simulations have been conducted to analyze the velocity attenuation cha-racteristics of high-velocity fragments with different shapes penetrating liquid tank.The simulation models include square fragment,spherical fragment,flat-nosed fragment and spherical-nosed fragment,and three different initial water-entery velocities are considered in the simulation.The numerical method for predicting the velocity attenuation of fragments are validated by the experimental data in Ref.[14].Based on the numerical results,the velocity attenuation formula is deduced.The fragment shape is determined as the key factor affecting the resistance coefficient of fragments.The resistance coefficient of the spherical-nosed fragment is smaller than that of the other three types of fragments,which might cause severe damage to the liquid tank.Based on the resistance coefficients of different fragments,the recommended resistance coefficient ranges are given for different fragments.

关 键 词：高速破片 侵彻液舱 速度衰减 破片形状 阻力系数 

分 类 号：TJ012.4[兵器科学与技术—兵器发射理论与技术]