Simulation of mechanical stress in REBaCuO disk bulk magnetized by pulsed-field
Simulation of mechanical stress in REBaCuO disk bulk magnetized by pulsed-field
复制标题
脉冲场磁化 REBaCuO 圆盘的机械应力模拟
DOI：
10.1088/1742-6596/1559/1/012029
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
T. Naito and M. D. Ainslie
中科院分区：
文献类型：
--
作者：
F. Shimoyashiki;H. Fujishiro;T. Hirano;T. Naito and M. D. Ainslie
我们使用螺线管线圈在脉冲场磁化 (PFM) 过程中对金属环增强的 REBaCuO 圆盘中的电磁环向应力 σ θ 进行了数值模拟，其中假定块体材料的超导特性具有真实的 J c-B-T 特性。在 PFM 的上升和下降阶段，分别在本体中施加压缩和拉伸 σ θ 应力。估计了机械应力的时间和位置依赖性。讨论了由于这些环向应力而导致机械断裂的可能性以及金属环增强件的影响。
We have performed numerical simulations of the electromagnetic hoop stress, σ θ, in a REBaCuO disk bulk reinforced by a metal ring during pulsed-field magnetization (PFM) using a solenoid coil, in which the superconducting characteristics of the bulk material were assumed to have realistic J c-B-T ones. The compressive and tensile σ θ stresses were applied in the bulk during the ascending and descending stages of PFM, respectively. The time and position dependences of the mechanical stresses were estimated. The possibility of mechanical fracture due to these hoop stresses and the effect of the metal ring reinforcement were discussed.