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

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.

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