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Numerical optimisation of mechanical ring reinforcement for bulk high-Temperature superconductors

Published version
Peer-reviewed

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Type

Article

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Authors

Barthlott, D 
Huang, KY 
Durrell, JH 
Cardwell, DA 
Holzapfel, B 

Abstract

jats:titleAbstract</jats:title> jats:pThe finite element method has been used extensively in recent years to solve various problems related to applied superconductivity and provides a useful tool for analysing and predicting experimental results. Based on a recently-developed modelling framework, implemented in the finite element software package jats:italicCOMSOL Multiphysics,</jats:italic> investigations on the minimum ring reinforcement required to prevent mechanical failure in bulk high-temperature superconducting magnets have been carried out. Assuming homogeneous jats:italicJjats:subc</jats:sub> </jats:italic>(jats:italicB,T</jats:italic>) across the bulk sample irrespective of its dimensions, the maximum magnetic stresses experienced, and the minimum ring thickness required to prevent the hoop and radial stresses from exceeding the tensile strength of the bulk superconductor have been determined for varying values of the Young’s modulus, radius, height and temperature of a representative single-grain Ag-containing Gd-Ba-Cu-O bulk sample. This comprehensive analysis details the influence each of these key parameters has on the magnetic stress and hence their impact on the necessary ring thickness to prevent mechanical failure in any given system, i.e., for any combination of material properties and sample dimensions.</jats:p>

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Keywords

51 Physical Sciences

Journal Title

Journal of Physics: Conference Series

Conference Name

14th European Conference on Applied Superconductivity

Journal ISSN

1742-6588
1742-6596

Volume Title

1559

Publisher

IOP Publishing
Sponsorship
Engineering and Physical Sciences Research Council (EP/P020313/1)