多环境枪弹高速垂直入水运动特性数值模拟研究  

Numerical simulation of high-speed vertical water entry motion of multi-environment ammunition

作　　者：王艺霏 姜伟兵 许辉 徐化睿 刘亚雷 刘坤[1] WANG Yifei;JIANG Weibing;XU Hui;XU Huarui;LIU Yalei;LIU Kun(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;The Seventh Military Representative Office in Chongqing,PLA Ground Force,Chongqing 400000,China;China Coast Guard Academy,Ningbo 315403,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]陆军驻重庆地区第七军代室,重庆400000 [3]中国人民武装警察部队海警学院,浙江宁波3158013

出　　处：《兵器装备工程学报》2023年第5期6-10,45,共6页Journal of Ordnance Equipment Engineering

基　　金：武警海警学院基金项目(WJ-2022-WJ2020A020040)。

摘　　要：针对跨介质枪弹,利用ANSYS/LS-DYNA软件开展高速垂直入水过程的数值模拟,通过与常规步枪弹入水过程数值模拟结果对比分析了多环境枪弹高速垂直入水时空泡形态、弹道轨迹与流体动力特性变化规律。研究结果表明:多环境枪弹采用平头多梯度锥体加空化槽的设计方案,有利于减少弹头入水过程的压力,可形成包裹弹头的超空泡,减少了跨介质入水过程中的弹头入水阻力,增加了水下有效射程,在水下作战时具有明显优势。研究成果可充实弹药设计理论,为武器优化提供理论参考。This paper uses ANSYS/LS-DYNA software to carry out the numerical simulation of the high-speed vertical water entry process of trans-medium ammunition.By comparing with the numerical simulation results of the water entry process of standard rifle cartridges,the change laws of cavitation morphology,ballistic trajectory and hydrodynamic characteristics of multi-environment ammunition vertically entering water at a high speed are analyzed.The results show that the design scheme of the multi-environment ammunition with flat head multi-gradient cone and cavitation slots is beneficial to reducing the pressure of the warhead in the water entry process,and can form supercavitation wrapped around the warhead.It also reduces water entry resistance of the warhead during the trans-medium process and increases its effective underwater range,which has obvious advantages in underwater warfare.The research results can enrich ammunition design theories and provide theoretical reference for weapon optimization.

关 键 词：多环境枪弹 高速入水 超空泡 弹药设计 

分 类 号：TJ41[兵器科学与技术—火炮、自动武器与弹药工程]