An internal ballistic model of electromagnetic railgun based on PFN coupled with multi-physical field and experimental validation  

作　　者：Benfeng Gu Haiyuan Li Baoming Li 

机构地区：[1]National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Defence Technology（防务技术）》2024年第2期254-261,共8页Defence Technology

摘　　要：To accelerate the practicality of electromagnetic railguns,it is necessary to use a combination of threedimensional numerical simulation and experiments to study the mechanism of bore damage.In this paper,a three-dimensional numerical model of the augmented railgun with four parallel unconventional rails is introduced to simulate the internal ballistic process and realize the multi-physics field coupling calculation of the rail gun,and a test experiment of a medium-caliber electromagnetic launcher powered by pulse formation network(PFN)is carried out.Various test methods such as spectrometer,fiber grating and high-speed camera are used to test several parameters such as muzzle initial velocity,transient magnetic field strength and stress-strain of rail.Combining the simulation results and experimental data,the damage condition of the contact surface is analyzed.

关 键 词：Internal ballistic modeling Electromagnetic rail gun Multi-physics field coupling Experimental validation PFN 

分 类 号：TJ866[兵器科学与技术—武器系统与运用工程] TJ012.1