Earticle

초록

영어

The Second-generation high-temperature superconducting (HTS) Rare-Earth Barium Copper Oxide (REBCO) wire is a composite laminate having a multi-layer structure (8 or more layers). HTS wires will undergo multiple loads including the bendingtension loads during winding, high current density, and high magnetic fields. In particular, the wires are subjected to bending stress and magnetic field stress because HTS wires are wound around a circular bobbin when making a high-field magnetic. Each of the different laminated wires inevitably exhibits damage and fracture behavior of wire due to stress deformation, mismatches in thermal, physical, electrical, and magnetic properties. Therefore, when manufacturing high-field magnets and other applications, it is necessary to calculate the stress-strain experienced by high-temperature superconducting wire to present stable operating conditions in the product's use environment. In this study, the finite element model (FEM) was used to simulate the strain-stress characteristics of the HTS wire under high current density and magnetic field, and bending loads. In addition, the result of obtaining the neutral axis of the wire and the simulation result was compared with the theoretical calculation value and reviewed. As a result of the simulation using COMSOL Multiphysics, when a current of 100 A was applied to the wire, the current value showed the difference of 10-9. The stress received by the wire was 501.9 MPa, which showed a theoretically calculated value of 500 MPa and difference of 0.38% between simulation and theoretical method. In addition, the displacement resulted is 30.0012 μm, which is very similar to the theoretically calculated value of 30 μm. Later, the amount of bending stress by the circular mandrel was received for each layer and the difference with the theoretically obtained the neutral axis result was compared and reviewed. This result will be used as basic data for manufacturing high-field magnets because it can be expanded and analyzed even in the case of wire with magnetic flux pinning.

목차

Abstract
1. 서론
2. 모델링 설계 및 유한요소 해석
2.1. 모델링
2.2. 초전도 선재의 유한요소 법 해석
2.3. 초전도 선재의 자기장 및 전기장에서의 응력 해석
2.4. 초전도 선재의 구조 해석
3. 결론
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• Dongjin Seo [ Department of Carbon Convergence Engineering and Institute of Carbon Technology, Jeonju University, Jeonju, 55069, Korea ]
• Yunjo Jung [ Department of Carbon Convergence Engineering and Institute of Carbon Technology, Jeonju University, Jeonju, 55069, Korea ]
• Hong-Gun Kim [ Department of Carbon Convergence Engineering and Institute of Carbon Technology, Jeonju University, Jeonju, 55069, Korea ]
• Hyung-Seop Shin [ Department of Mechanical Design Engineering, Andong National University, Andong, 36729, Korea ]
• Young-Soon Kim [ Department of Carbon Convergence Engineering and Institute of Carbon Technology, Jeonju University, Jeonju, 55069, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2025

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537