Calculation of the critical current reduction in a brittle wound multifilamentary wire due to external forces

Author

Ten Haken, Bennie ; Godeke, Arno ; Ten Kate, Herman H J

Author_Institution

Appl. Supercond. Centre, Twente Univ., Enschede, Netherlands

Volume

30

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

1867

Lastpage

1870

Abstract

A simple model is presented that can describe the electro-mechanical state of a multifilamentary wire. An elastic cylinder model is used to derive the strain state analytically. Axial and transverse forces came a position dependent critical current density in the wire. The integral critical current of such a wire is calculated. The effect of two different parameters, the hydrostatic and the deviatoric strain, on the critical current is compared. The critical current reduction of a model wire due to various external loads in a Nb ₃Sn wire is analysed. Finally the position of the superconducting filaments is considered

Keywords

critical current density (superconductivity); elastic deformation; niobium compounds; superconducting materials; Nb₃Sn; axial forces; brittle wound multifilamentary wire; critical current reduction; deviatoric strain; elastic cylinder model; electro-mechanical state; external forces; external loads; hydrostatic strain; integral critical current; position dependent critical current density; strain state; superconducting filaments; transverse forces; Capacitive sensors; Conductors; Critical current; Critical current density; Integrated circuit modeling; Magnetic field induced strain; Superconducting filaments and wires; Superconducting magnets; Superconductivity; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.305623

Filename

305623