几何不对称对弹塑性射弹入水运动影响数值仿真研究  

Numerical Simulation of the Effect of Geometric Asymmetry on the Process of Elastoplastic Projectile Entering Water

作　　者：冯沐桦 郭荣君 李天雄 孙宇新[1] FENG Muhua;GUO Rongjun;LI Tianxiong;SUN Yuxin(National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学瞬态物理国家重点实验室,南京210094

出　　处：《弹箭与制导学报》2021年第3期76-80,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：为研究射弹高速跨介质入水相关问题,利用数值仿真软件,对几何对称和系列头部切削角的弹塑性射弹入水转向过程进行了数值模拟。分析了射弹入水转向的受力机理,揭示了切削角度对射弹入水运动的影响规律。最终得出几何不对称结构能够让所研究的典型射弹跨介质入水运动更加平稳,且在一定范围内,切削角越大,弹体入水后转向更平缓。In order to provide a reference for studying the problems about projectiles entering water problem at high speed across the medium,this paper uses numerical simulation software to conduct a numerical simulation study on the turning process of the elastoplastic projectile with geometric symmetry and series of head cutting angles.The force mechanism of the projectile’s turning into the water is analyzed,and the influence of the cutting angle on the projectile’s entry into the water is revealed.Finally,we found out that the geometrically asymmetric structure can make the projectile’s underwater movement more smooth,also,within a certain range,the greater the cutting angle is,the smoother the projectile’s underwater turning process is.

关 键 词：射弹 射弹不对称性 弹塑性 跨介质入水转向 切削角 

分 类 号：TJ6[兵器科学与技术—武器系统与运用工程] TJ410