应变-临界电流测量系统中超导线应变分布及临界电流分析

核聚变与等离子体物理 ›› 2010, Vol. 30 ›› Issue (4): 355-359.

应变-临界电流测量系统中超导线应变分布及临界电流分析

刘方，武玉，龙风

(中国科学院等离子体物理研究所, 合肥 230031)

收稿日期:2010-04-14 修回日期:2010-08-31 出版日期:2010-12-15 发布日期:2011-01-26
作者简介:刘方(1981-)，女，湖北监利人，博士，从事超导材料性能研究。
基金资助:
国家重点基础研究发展规划项目(973计划) (0559730532)

Analysis of strain distribution and critical current of superconductors based on a strain-critical current measurement system

LIU Fang, WU Yu, LONG Feng

(Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)

Received:2010-04-14 Revised:2010-08-31 Online:2010-12-15 Published:2011-01-26

摘要/Abstract

摘要：

基于当前应用较广泛的应变下临界电流测量装置Pacman，利用有限元方法对应变盘及超导线进行受力分析，得到了超导线轴向及横向的应变分布情况。结合Nb₃Sn超导线偏应变临界电流定标律，分析了在两种极限假设情况(低丝间电阻和高丝间电阻)下超导线截面应变分布对临界电流的影响。

关键词: 应变, 临界电流, 有限元, 丝间电阻

Abstract:

Based on Pacman device which is widely used to investigate the axial strain dependence of the critical current in superconductors, the finite element analysis method is employed to carry out the force analysis of the spring and the superconducting strand, thereby the axial and lateral strain distributions of the superconducting strand are obtained. According to the two extreme assumptions (low inter-filament resistance and high inter-filament resistance), the effects of the strain homogeneity at the cross section of the superconductor on the critical current is analyzed combined with the Nb₃Sn deviatoric strain-critical current scaling law.

Key words: Strain, Critical current, Finite element, Inter-filament resistance

中图分类号:

O511.4

刘方，武玉，龙风. 应变-临界电流测量系统中超导线应变分布及临界电流分析[J]. 核聚变与等离子体物理, 2010, 30(4): 355-359.

LIU Fang, WU Yu, LONG Feng. Analysis of strain distribution and critical current of superconductors based on a strain-critical current measurement system[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2010, 30(4): 355-359.

参考文献

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