Stress Analysis of a High Temperature Superconductor Coil Wound With Bi-2223/Ag Tapes for High Field HTS/LTS NMR Magnet Application
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Choi_Stress-Analysis.pdf
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Author(s)
Kiyoshi, Tsukasa
Sugano, Michinaka
Choi, Seyong
Hahn, Seung-Yong
Date Issued
July 2009
Journal
IEEE Transactions on Applied Superconductivity : a publication of the IEEE Superconductivity Committee
Publisher
Institute of Electrical and Electronics Engineers
Citation
Seyong Choi; Kiyoshi, T.; Seung-yong Hahn; Sugano, M.; , "Stress Analysis of a High Temperature Superconductor Coil Wound With Bi-2223/Ag Tapes for High Field HTS/LTS NMR Magnet Application," Applied Superconductivity, IEEE Transactions on , vol.19, no.3, pp.2237-2240, June 2009
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5067035&isnumber=5166701 © 2009 Institute of Electrical and Electronics Engineers
Version
Final published version
Abstract
The electromagnetic stress distribution inside a HTS insert is one of the key issues for construction of a high field high/low temperature superconductor (HTS/LTS) magnet. The rmiddotJmiddotB formulae is widely used for the stress calculation of the coil, due to its simplicity. However, the assumption of this calculation makes it impossible to consider the effects of the bobbin, an epoxy impregnated structure, on stress of the coil. In this work, stress analysis methods are reported. The governing equation defined from the force equilibrium state was adopted and used to analyze what the stress of the HTS coil wound with Bi2223/Ag conductor. The validness of the stress analysis method was confirmed by comparison with experimental results, especially in the coil with epoxy impregnation. The numerical and experimental procedures are described and both results are discussed.
MIT Department
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1109/tasc.2009.2018071
