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

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ABSTRACT

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.

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Schematic diagrams of superconducting model: a an infinitely long composite superconducting cylinder under torque, b cross section of the composite cylinder
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Fig1: Schematic diagrams of superconducting model: a an infinitely long composite superconducting cylinder under torque, b cross section of the composite cylinder

Mentions: As shown in Fig. 1, a Bi2223/Ag composite concentric cylinder consists of two components: the superconducting core and Ag alloy sheath. The radii of the total cross-section and superconducting core are and , respectively. The core is composed of Bi2223 superconducting filament and the Ag matrix. For the considered composite concentric cylinder, the elastic moduli of these components are listed in Table 1 (Gou and Shen 2012).Fig. 1


An analysis model of torque dependence of critical current in a Bi2223/Ag composite concentric cylinder
Schematic diagrams of superconducting model: a an infinitely long composite superconducting cylinder under torque, b cross section of the composite cylinder
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5016496&req=5

Fig1: Schematic diagrams of superconducting model: a an infinitely long composite superconducting cylinder under torque, b cross section of the composite cylinder
Mentions: As shown in Fig. 1, a Bi2223/Ag composite concentric cylinder consists of two components: the superconducting core and Ag alloy sheath. The radii of the total cross-section and superconducting core are and , respectively. The core is composed of Bi2223 superconducting filament and the Ag matrix. For the considered composite concentric cylinder, the elastic moduli of these components are listed in Table 1 (Gou and Shen 2012).Fig. 1

View Article: PubMed Central - PubMed

ABSTRACT

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.

No MeSH data available.


Related in: MedlinePlus