NDLI: Analysis of Transient Current Distribution in Copper Strips of Different Structures for Electromagnetic Railgun

Content Provider	IEEE Xplore Digital Library
Author	Yan-Chang Xing Qing-Ao Lv Bin Lei Hong-Jun Xiang Ren-Gui Zhu Chao Liu
Copyright Year	1973
Abstract	A railgun is a kind of new-concept kinetic energy weapon. To overcome the local aggregation of the high pulse current on the surface of the railgun conductor, a method was introduced to abate the skin effect. On the basis of theoretical analysis, three kinds of methods were adopted to increase the current uniformity coefficient. Then, the copper strips, whose thicknesses were 40, 20, 15, and 10 mm, respectively, were simulated with a typical half-period sine waveform that had a 10-ms pulsewidth and a 2-MA peak current. The best current uniformity coefficient in the copper strips is more than 83%. Three conclusions are drawn in this paper. First, under the same conditions, the current distribution will become more uniform as the copper strips become thinner. Second, the current distribution can be improved to a certain extent by rounding strip edges. Third, the added tungsten sheaths or iron sheaths on both sides of the copper strips can further improve the current distribution. The results of this paper have great significance for improving the pulse current-carrying capability of the railgun conductors.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1566
Ending Page	1571
Page Count	6
File Size	1798116
File Format	PDF
ISSN	00933813
Volume Number	43
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Copper Strips Current density Current distribution Conductors Railguns Tungsten uniformity coefficient. finite-element simulation railguns skin effect uniformity coefficient
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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