Distribution of stress in force-balanced coils on virial theorem
Distribution of stress in force-balanced coils on virial theorem
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根据维里定理力平衡线圈中的应力分布
DOI：
10.1109/tasc.2003.812921
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发表时间：
2003
影响因子：
1.8
通讯作者：
R. Shimada
中科院分区：
文献类型：
--
作者：
H. Tsutsui;S. Nomura;N. Watanabe;C. Suzuki;S. Kajita;Y. Ohata;S. Tsuji;R. Shimada
对螺旋线圈超导储能装置的应力分布进行了实验和数值分析。在以前的工作中，我们用维里定理给出了环形超导储能系统储能的理论极限。为了验证理论极限，我们设计并制作了一个由两组螺旋超导线圈和铝合金环形框架组成的小型装置。通过实验获得了电磁力作用于框架的应变。数值计算了与该装置结构相似的环壳上的应力分布。将实验结果与数值计算结果进行了比较，结果表明，环向应力分布计算值与实验值基本一致，而极向应力分布计算值与实验值相差较大。
Distributions of stress on a device with helical coils for the superconducting magnetic energy storage (SMES) are analyzed experimentally and numerically. In the previous work, we showed a theoretical limit of stored energy in a toroidal SMES system by the virial theorem. To verify the theoretical limit, we designed and construct a small device which is composed of two sets of helical superconducting coils and a toroidal frame of aluminum alloy. Strains by electromagnetic force on the frame were obtained experimentally. Distributions of stress on a toroidal shell with a similar configuration to the device are numerically calculated. Comparing the results of the experiments and the numerical calculations, a qualitative agreement of stress distribution between the calculation and the experiment is obtained in the toroidal direction, while discrepancies of stress in the poloidal direction are not negligible.