首页|An internal ballistic model of electromagnetic railgun based on PFN coupled with multi-physical field and experimental validation
An internal ballistic model of electromagnetic railgun based on PFN coupled with multi-physical field and experimental validation
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To accelerate the practicality of electromagnetic railguns,it is necessary to use a combination of three-dimensional 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.
Internal ballistic modelingElectromagnetic rail gunMulti-physics field couplingExperimental validationPFN
Benfeng Gu、Haiyuan Li、Baoming Li
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National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,China
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