不同轨道结构下电枢电流分布特性

刘明; 舒涛; 苗海玉; 刘少伟; 薛新鹏

doi:10.11884/HPLPB201830.170422

不同轨道结构下电枢电流分布特性

doi: 10.11884/HPLPB201830.170422

空军工程大学防空反导学院, 西安 710051

基金项目:

国家自然科学基金青年科学基金项目 51605488

详细信息

作者简介:
刘明(1993—)，男，硕士研究生，主要从事电磁发射研究；929237749@qq.com

通讯作者:
舒涛(1971—)，男，教授，主要从事发射理论与技术研究；st9711@sina.com

中图分类号: TP391.9
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- 被引次数: 0
出版历程
- 收稿日期: 2017-10-31
- 修回日期: 2018-01-19
- 刊出日期: 2018-05-15

Distribution characteristics of armature current in different orbit structures

Air Defense and Missile Defense, Air Force Engineering University, Xi'an 710051, China

摘要

摘要: 解决轨道和电枢的烧蚀问题是六极轨道电磁发射器走向实际应用的关键环节，引起轨道和电枢烧蚀的原因之一就是轨道和电枢中电流分布不均匀。利用有限元仿真软件Ansoft Maxwell对三种不同轨道进行仿真，得到了电枢表面电流密度分布情况以及电枢受力。结果表明：矩形轨道对应电枢表面电流密度最大值在三种轨道中最小，凸出半圆形轨道枢轨接触面电流分布最均匀，在发射过程中可以有效减少轨道和电枢的烧蚀，凹陷半圆形轨道对应的电枢受力最大，可用于大质量物体的发射。
- 六极轨道电磁发射器 /
- 半圆形轨道 /
- 电流密度分布 /
- 有限元分析
Abstract: Solving the problem of ablation of track and armature is the key to the practical application of the six-pole electromagnetic launcher. One of the causes of the ablation of track and armature is the uneven distribution of current between the rails and the armature.In this paper, the finite element simulation software Ansoft Maxwell is used to simulate the three different orbits, and the distribution of the armature contact surface current density and the armature stress are obtained. The results show: the rectangular orbit maximum current density is the minimum of the three orbits; the concave-semicircle-orbit current distribution is the most uniform, and during the launch process the concave armature contact surface can effectively reduce the erosion of the rail and armature; the convex-orbit armature has the maximum stress and it can be used for high quality objects launch.
- six-pole orbital electromagnetic launcher /
- semicircular orbit /
- current density distribution /
- finite element analysis

HTML全文

图 1 六极轨道发射器模型

Figure 1. Six-pole orbiter launcher model

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图 2 抛体和六极轨道的电流流动方向

Figure 2. Projectile and six pole orbit current flow direction

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图 3 三种轨道截面

Figure 3. Three orbital sections

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图 4 脉冲电流

Figure 4. Pulse current

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图 5 电枢表面电流密度分布

Figure 5. Distribution of current density on armature surfaces

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图 6 电枢受力随时间变化

Figure 6. Armature force changes over time

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图 7 枢轨接触面电流分布

Figure 7. Current distribution of armature contact surface

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图 8 不同轨道枢轨接触面电流分布

Figure 8. Current distribution of different armature rail contact surfaces

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图 9 轨道尺寸对受力的影响

Figure 9. Influence of orbital dimensions on armature stress

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表 1 不同轨道最大电流密度值

Table 1. Maximum current density of different orbits

R or Δb/mm	J_rect/(GA·m^－2)	J_convex/(GA·m^－2)	J_concave/(GA·m^－2)
2	9.14	11.3	12.0
3	8.62	10.1	15.8
4	7.88	84.4	16.0

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