电磁轨道炮膛内磁场环境的数值仿真分析
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摘要
根据Maxwell方程推导出电磁场参数与速度之间的关系,建立了直角坐标系下的电磁轨道炮模型,分析了固体电枢电磁轨道炮的速度趋肤效应;以矩形电枢和U型电枢为例,给出了边界条件和激励源函数。采用有限差分法对方程进行了分析,得到轨和电枢中的磁密度云图和电密度云图及电枢的受力曲线。轨道炮膛内磁场的高磁通密度,空间衰减迅速特点及低频特性,对轨道炮膛内磁场屏蔽设计具有重要的意义。
According to the Maxwell equation, the relationship between the electromagnetic field parameters and the velocity is deduced,and the electromagnetic track gun model under the Cartesian coordinate system is established. The velocity skin effect of the solid armature electromagnetic track gun is analyzed. Taking the rectangular armature and U-shaped armature as an example,the boundary condition and the excitation source function are given. The finite difference method is used to analyze the equations,and the magnetic density image and the electrical density cloud diagram in the track and armature are obtained,and the force curve of the armature is obtained. The high magnetic flux density,the spatial attenuation characteristics and the low frequency characteristics of the magnetic field in the borehole borehole are of great significance to the design of the magnetic field in the borehole.
According to the Maxwell equation, the relationship between the electromagnetic field parameters and the velocity is deduced,and the electromagnetic track gun model under the Cartesian coordinate system is established. The velocity skin effect of the solid armature electromagnetic track gun is analyzed. Taking the rectangular armature and U-shaped armature as an example,the boundary condition and the excitation source function are given. The finite difference method is used to analyze the equations,and the magnetic density image and the electrical density cloud diagram in the track and armature are obtained,and the force curve of the armature is obtained. The high magnetic flux density,the spatial attenuation characteristics and the low frequency characteristics of the magnetic field in the borehole borehole are of great significance to the design of the magnetic field in the borehole.
引文
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[3]杨玉东,王建新,薛文.轨道炮速度趋肤效应的分析与仿真[J].强激光与粒子束,2011,23(7):1965-1968.
[4]汤铃铃,李豪杰.电磁轨道炮膛内磁场环境仿真分析[J].计算机仿真,2014,31(11):1-5.
[5]李昕.电磁轨道炮电枢特性理论研究[D].南京:南京理工大学,2009.
[6]杜传通,雷彬,金龙文,等.电磁轨道炮电枢技术研究进展[J].火炮发射与控制学报,2017,38(2):94-100.