By Topic

Optimization of Brittle Superconducting {\rm Nb}_{3}{\rm Sn} Strand Designs

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

7 Author(s)

Finite element simulations and experimental measurements of deformed strand cross sections were performed to study their structural behavior during cabling. A variety of strand designs were modeled to identify and optimize design parameters like sub-element shape, number of sub-elements, and their spacing. The model results were correlated to the experimental results. This led to a numerical-experimental approach that is effective in predicting fracture, merging, and deformation of the sub-elements. Strains were calculated as a function of strand deformation for strands with 54, 120, and 210 sub-elements and a local Cu-to-non-Cu ratio of 0.165. Strains as a function of strand deformation were also calculated for 120/127 strands with a local Cu-to-non-Cu ratio of 0.11, 50% increased spacing, and 100% increased spacing between sub-elements. Results showed that increasing the spacing by 100% reduces the maximum strain-x, maximum strain-y, and maximum strain-xy by 14%, 13%, and 29% respectively at a 30% strand deformation level. Also, results revealed that the maximum strain components are always located in the sub-elements close to the center of the strands, which agrees with the experimental findings.

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:18 ,  Issue: 2 )