| 电枢运动状态下轨道炮膛内磁场仿真分析 |
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| 引用本文： | 李峰,李豪杰,殷强.电枢运动状态下轨道炮膛内磁场仿真分析[J].四川兵工学报,2016(10). |
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| 作者姓名： | 李峰 李豪杰 殷强 |
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| 作者单位： | 南京理工大学 智能弹药技术国防重点学科实验室,南京,210094 |
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| 基金项目： | 装备预研基金项目(9140C300106150C30001) |
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| 摘 要： | 通过对三维轨道炮模型进行有限元分析求得电枢所受电磁力，进而得到电枢运动速度和位移。以离散时间步长仿真得到不同时刻电枢位于不同位置时的考察点磁场强度。结果表明，膛内磁场变化同激励电流变化整体一致，但是磁场峰值时刻滞后于电流峰值时刻，在下降阶段磁场出现局部波动。磁场频率集中于低频段，整体呈下降趋势。
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| 关 键 词： | 电磁轨道炮 电枢运动 磁场分布 三维有限元 |
Simulation Analysis of Railgun In-Born Magnetic Field in Armature Movement State |
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| Abstract: | Railgun model was established and analyzed by using 3 D finite element method of electromagnetic field.The electromagnetic force on armature was obtained and then the armature’s velocity and displacement were derived.Considering different locations of the armature at different times,the magnetic field of investigated points were accomplished in discrete time steps.The results indicate that the change of in-bore magnetic field is in consistent with the change of excitation current approximately,but the magnetic field peak time lags behind the current peak time.And the magnetic field appears local fluctuations.The frequency of magnetic field is concentrated in the low frequency band and the overall trend is downward. |
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| Keywords: | electromagnetic railgun armature movement magnetic field distribution 3D finite element |
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