洛伦兹力
材料科学
电磁线圈
抗压强度
压力(语言学)
横截面
圆筒应力
复合材料
极限抗拉强度
超导电性
磁铁
螺旋弹簧
超导磁体
磁场
凝聚态物理
结构工程
物理
弹簧(装置)
语言学
哲学
量子力学
工程类
作者
Gen Nishijima,Kazuo Watanabe,Tadahiro Araya,K. Katagiri,Koichi Kasaba,K. Miyoshi
出处
期刊:Cryogenics
[Elsevier BV]
日期:2005-10-01
卷期号:45 (10-11): 653-658
被引量:19
标识
DOI:10.1016/j.cryogenics.2005.08.003
摘要
Lorentz force is applied to coil windings when the magnet is charged. The coil windings are subjected to huge hoop tensile stress and transverse compressive stress in both the radial and axial directions due to the Lorentz force. The higher the magnetic field and the larger the bore, the larger the Lorentz force applied to the coil windings. Thus, not only the hoop stress, but also transverse compressive stress should be taken into account when designing the magnet. In this paper, we focus on transverse compressive stress, and the influence of this stress on critical current is explored for a standard Nb3Sn wire and a Cu–NbTi-reinforced Nb3Sn wire. It was confirmed that Cu–NbTi sufficiently reinforced the superconducting wire, not only for tensile stress, but also for transverse compressive stress. The effect of reinforcement arrangement in the cross section was also investigated. In the case that Cu–NbTi reinforcement is arranged at the center of the wire, there was less deterioration in superconducting property than in the case of the reinforcement being arranged in the outer part of the wire.
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