Electromagnetic-Mechanical Coupling Analysis of Nb3Sn Superconducting Strand
作者： Wurui Ta , Yuanwen Gao
DOI: 10.1109/TASC.2016.2536200
关键词:
摘要: The transport performance of Nb 3 Sn cable-in-conduit conductors (CICCs) depends on the strain distribution along superconducting filaments determined by combination electromagnetic and mechanical forces applied to strands. aim this paper is analyze electromagnetic-mechanical coupling behavior strand establishing a 3-D finite-element model. This model contains subdomains, which are air region, filaments, metal matrix. constitutive relations matrix described with elastic elasto-plastic strain-stress experimental curve, respectively. For voltage-current (V-I) characteristic, elements follow Ohmic law, modeled n-power relation. Lorentz force in three directions (x, y, z) caused external magnetic field induced current calculated. density also computed, results show prevent further penetration from outer into interior effect tensile discussed. It can be found that combined makes degradation obvious. provides basis able predict flow patterns distribution.
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