铜基复合型四极轨道电磁特性仿真分析

doi:10.12305/j.issn.1001-506X.2021.11.03

摘要/Abstract

摘要：

四轨电磁发射器在工作过程中, 电流集中引起的热效应会影响发射精度和轨道寿命。为缓解大电流带来的轨道热损伤及机械磨损问题, 提出铜基复合型四轨电磁发射器模型并对其电磁特性进行了研究。采用有限元方法, 对复合型和普通型四轨电磁发射器的电流密度和磁场分布进行了仿真对比; 分析了复合层参数对电流密度、磁场强度和电枢受力三方面的影响。仿真结果表明，复合型四轨电磁发射器能够降低电枢和轨道接触面的电流密度, 改善接触面的电流分布状况; 复合型四轨电磁发射器在特定位置处具有更大的磁场屏蔽范围, 能为智能弹药提供良好的磁场环境; 电流密度、磁场强度和电枢推力均随着铜-钢厚度比的增加而增大。

关键词: 电磁发射, 四极磁场, 复合型轨道, 电磁特性, 有限元仿真

Abstract:

In the working process of four rail electromagnetic launch, the thermal effect caused by current concentration will affect the launch accuracy and rail life. In order to alleviate the rail thermal damage and mechanical wear caused by high current, a copper based composite four rail electromagnetic launch model is proposed and its electromagnetic characteristics are studied. The current density and magnetic field distribution of composite and common four rail electromagnetic launch are simulated and compared by using finite element method; The effects of the parameters of the composite layer on the current density, magnetic field intensity and armature force are analyzed. The simulation results show that the composite four rail electromagnetic launch can reduce the current density and improve the current distribution of the armature rail interface; The composite four track electromagnetic launch has a larger magnetic field shielding range at a specific position, which can provide a good magnetic field environment for intelligent ammunition; The current density, magnetic field intensity and armature thrust increase with the increase of the thickness ratio of copper to steel.

Key words: electromagnetic launch, quadrupole magnetic field, composite orbit, electromagnetic characteristics, finite element simulation

中图分类号:

TJ768.2

李腾达, 冯刚, 刘少伟, 时建明, 范成礼. 铜基复合型四极轨道电磁特性仿真分析[J]. 系统工程与电子技术, 2021, 43(11): 3054-3063.

Tengda LI, Gang FENG, Shaowei LIU, Jianming SHI, Chengli FAN. Simulation analysis of electromagnetic characteristics of copper-based composite quadrupole orbit[J]. Systems Engineering and Electronics, 2021, 43(11): 3054-3063.

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参数	材质	普通型	铜-钢厚度比
参数	材质	普通型	1∶1	4∶1	9∶1
I_max	铜	20.2	2.7	3.4	3.6
	钢	4.9	1.1	1.4	1.5
	铝	－	16.2	17.1	18.3

参数	材质	普通型	铜-钢厚度比
参数	材质	普通型	1∶1	4∶1	9∶1
B_max	铜	54.6	45.4	50.5	52.2
	钢	-	37.1	42.6	45.3
	铝	121.2	120.7	120.6	120.2

参数		F_x	F_y	F_z	MagF
铜-钢厚度比	1∶1	7.9	4.6	91.1	91.6
	4∶1	4.8	4.5	92.3	92.5
	9∶1	20.6	11.4	94.2	97.1
普通型		21.4	51.1	95.6	110.5

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