An analysis model of torque dependence of critical current in a Bi2223/Ag composite concentric cylinder

作者：Yan, Z.; Jin, J.; Feng, W. J.^*

来源：SpringerPlus, 2016, 5(1): 1517.

DOI：10.1186/s40064-016-3168-3

• Degradation behavior of critical current
• Linear weakening model
• Elastic-plastic deformation
• Torque dependence
• Bi2223 composite superconducting cylinder

In this paper, a model of torque dependence of critical current in a Bi2223/Ag composite concentric cylinder is analyzed. Based on the hypothesis of planar section and elastic linear strengthening constitutive theory, the relation between torque and shear strain is firstly obtained. Then a linear weakening relation between critical current density and shear strain are put forward. Finally the effects of the applied torque together with the mechanical properties of superconducting core on the degradation behavior of critical current are calculated and discussed. The results and conclusions should be helpful to the application of superconducting materials subjected to elastic-plastic torsional deformation.

• 出版日期2016-9-8
• 单位河北科技大学