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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.

No MeSH data available.


Normalized critical current versus normalized torque for different strengthening parameters of shearing elastic moduli of superconducting core as , , and κ = 150
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Fig4: Normalized critical current versus normalized torque for different strengthening parameters of shearing elastic moduli of superconducting core as , , and κ = 150

Mentions: In order to deeply explore the effects of torque and material parameters on critical current, numerical results are plotted in Figs. 2, 3, 4 and 5, where and αsh = 0.2 are, respectively, assumed directly, and the applied torque is normalized by with , calculated from and αc ≡ 0.1 being adopted. In fact, T0 is the corresponding torque under which the inner superconducting core starts to yield.Fig. 2


An analysis model of torque dependence of critical current in a Bi2223/Ag composite concentric cylinder
Normalized critical current versus normalized torque for different strengthening parameters of shearing elastic moduli of superconducting core as , , and κ = 150
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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

Fig4: Normalized critical current versus normalized torque for different strengthening parameters of shearing elastic moduli of superconducting core as , , and κ = 150
Mentions: In order to deeply explore the effects of torque and material parameters on critical current, numerical results are plotted in Figs. 2, 3, 4 and 5, where and αsh = 0.2 are, respectively, assumed directly, and the applied torque is normalized by with , calculated from and αc ≡ 0.1 being adopted. In fact, T0 is the corresponding torque under which the inner superconducting core starts to yield.Fig. 2

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.