Three-directional FEM analyses of pre-bending effects for Nb3Sn composite wires

Satoru Murase, I. Okada, K. Kiyama, N. Nanato, S. B. Kim, H. Oguro, G. Nishijima, S. Awaji, K. Watanabe, M. Wake

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Pre-bending effects of Nb3Sn composite wires, enhancement in Jc at the as-cooled condition and Jc peak, Jcm, against applied tensile strain, are well known in especially Cu-Nb reinforced Cu stabilized Nb3Sn wire. In an attempt to understand the effects, three directional strain analyses using FEM were studied by considering thermally-induced residual strain due to temperature difference between the reaction temperature and the cryogenic temperatures including the pre-bending process at room temperature for three types of Nb3Sn composite wires. To evaluate effects of change in three directional strain, the von Mises strain was introduced. As a result, the minimum von Mises strain against the applied tensile strain corresponded to Jcm ; low strain shows Jcm enhancement by the pre-bending for Cu-Nb reinforced Nb3Sn wire. It was found that there is a direct correlation between the minimum von Mises strain and Jcm related to the pre-bending.

Original languageEnglish
Pages (from-to)2676-2679
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume17
Issue number2
DOIs
Publication statusPublished - Jun 1 2007

Keywords

  • Composite superconductor
  • FEM
  • NbSn
  • Prebending
  • Three-directional strain

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Three-directional FEM analyses of pre-bending effects for Nb<sub>3</sub>Sn composite wires'. Together they form a unique fingerprint.

  • Cite this

    Murase, S., Okada, I., Kiyama, K., Nanato, N., Kim, S. B., Oguro, H., Nishijima, G., Awaji, S., Watanabe, K., & Wake, M. (2007). Three-directional FEM analyses of pre-bending effects for Nb3Sn composite wires. IEEE Transactions on Applied Superconductivity, 17(2), 2676-2679. https://doi.org/10.1109/TASC.2007.899597