Simulation of mechanical stresses in reinforced REBaCuO ring bulks during pulsed-field magnetization
Authors
Hirano, T
Fujishiro, H
Naito, T
Ainslie, MD
Publication Date
2020Journal Title
Journal of Physics: Conference Series
Conference Name
14th European Conference on Applied Superconductivity
ISSN
1742-6588
Publisher
IOP Publishing
Volume
1559
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Hirano, T., Fujishiro, H., Naito, T., & Ainslie, M. (2020). Simulation of mechanical stresses in reinforced REBaCuO ring bulks during pulsed-field magnetization. Journal of Physics: Conference Series, 1559 (1) https://doi.org/10.1088/1742-6596/1559/1/012027
Abstract
<jats:title>Abstract</jats:title>
<jats:p>We have performed numerical simulations of the electromagnetic, thermal and mechanical properties of a REBaCuO ring-shaped bulk with various reinforcement structures during pulsed-field magnetization (PFM). Compressive and tensile electromagnetic stresses, <jats:inline-formula>
<jats:tex-math>
<?CDATA ${\sigma }_{\theta }^{{\rm{mag}}}$?>
</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msubsup>
<mml:mi>σ</mml:mi>
<mml:mi>θ</mml:mi>
<mml:mrow>
<mml:mi mathvariant="normal">mag</mml:mi>
</mml:mrow>
</mml:msubsup>
</mml:mrow>
</mml:math>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="JPCS_1559_1_012027_ieqn1.gif" xlink:type="simple" />
</jats:inline-formula>, are developed in the ring-shaped bulk during the ascending and descending stages of PFM, respectively. These stresses increase at lower operating temperatures and for higher applied pulsed fields. In order to reduce these stresses, the ring-shaped bulk was fully encapsulated by outer and inner ring with upper and lower plates made by Al alloy. In particular, this reinforcement structure can achieve the lowest electromagnetic compressive stress, which corresponds to about 54% of that for a conventional ring reinforcement structure, and the electromagnetic tensile stress was also reduced. We also compared the simulation results of the electromagnetic stresses for the ring-shaped bulk to those for a disk-shaped bulk.</jats:p>
Keywords
Paper
Sponsorship
JSPS KAKENHI Grant No. 15K04646
Funder references
Engineering and Physical Sciences Research Council (EP/P020313/1)
Identifiers
jpcs_1559_1_012027, j15591027
External DOI: https://doi.org/10.1088/1742-6596/1559/1/012027
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333261
Rights
Licence:
http://creativecommons.org/licenses/by/3.0/
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