Numerical Simulation of Critical Current Performance in Nb3Sn Strand Subjected to Periodic Bending Deformation
-
- Murakami Haruyuki
- Waseda University
-
- Ueda Hiroshi
- Waseda University
-
- Ishiyama Atsushi
- Waseda University
-
- Koizumi Norikiyo
- Japan Atomic Energy Agency
-
- Okuno Kiyoshi
- Japan Atomic Energy Agency
Bibliographic Information
- Other Title
-
- 数値シミュレーションによるNb3Sn素線の波状曲げ変形時の超電導特性の評価
- スウチ シミュレーション ニ ヨル Nb3Sn ソセン ノ ハジョウ マゲ ヘンケイジ ノ チョウデンドウ トクセイ ノ ヒョウカ
Search this article
Abstract
In the ITER Engineering Design Activity (EDA), four Nb3Sn model coils were developed and successfully tested. However, it was revealed that the critical current of the conductor degraded with the increase of electromagnetic force. One of the explanations of this phenomenon is a strand bending caused by enormous electromagnetic force. The authors therefore developed a simulation code using the distributed circuit model to investigate dependency of the critical current performance on the periodic bending deformation. The simulation results were in good agreement with the experiments. The dependence of the critical current on the periodic transverse load, temperature, periodic load pitch, thickness of Ta barrier which prevents Cu stabilizer to be contaminated by Sn, twist pitch of the strand and RRR of the bronze matrix was investigated using the developed code. The results showed that the critical current degraded less with decreasing the pitch of the transverse load and increasing the Ta barrier thickness. It suggests that the shorter cabling pitch and the larger bending stiffness prevent the critical current degradation.
Journal
-
- IEEJ Transactions on Power and Energy
-
IEEJ Transactions on Power and Energy 128 (6), 853-859, 2008
The Institute of Electrical Engineers of Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1390001204603140352
-
- NII Article ID
- 10021130907
-
- NII Book ID
- AN10136334
-
- ISSN
- 13488147
- 03854213
-
- NDL BIB ID
- 9531676
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed