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高温超导带材超导涂层局部脱黏后的电磁力学行为分析

杨育梅 李志鹏

杨育梅, 李志鹏. 高温超导带材超导涂层局部脱黏后的电磁力学行为分析[J]. 力学学报, 2021, 53(5): 1345-1354. doi: 10.6052/0459-1879-21-043
引用本文: 杨育梅, 李志鹏. 高温超导带材超导涂层局部脱黏后的电磁力学行为分析[J]. 力学学报, 2021, 53(5): 1345-1354. doi: 10.6052/0459-1879-21-043
Yang Yumei, Li Zhipeng. ELECTROMAGNETIC MECHANICAL BEHAVIOR OF A SUPERCONDUCTING COATING FOR HTS TAPES WITH LOCAL DETACHMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(5): 1345-1354. doi: 10.6052/0459-1879-21-043
Citation: Yang Yumei, Li Zhipeng. ELECTROMAGNETIC MECHANICAL BEHAVIOR OF A SUPERCONDUCTING COATING FOR HTS TAPES WITH LOCAL DETACHMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(5): 1345-1354. doi: 10.6052/0459-1879-21-043

高温超导带材超导涂层局部脱黏后的电磁力学行为分析

doi: 10.6052/0459-1879-21-043
基金项目: 1)国家自然科学基金资助项目(11402106);国家自然科学基金资助项目(11962015)
详细信息
    作者简介:

    2)杨育梅, 副教授, 主要研究方向: 高温超导材料与结构多物理场耦合行为研究以及智能材料微纳米尺度多场耦合特性研究. E-mail:ymyang@lut.cn

    通讯作者:

    杨育梅

  • 中图分类号: O342

ELECTROMAGNETIC MECHANICAL BEHAVIOR OF A SUPERCONDUCTING COATING FOR HTS TAPES WITH LOCAL DETACHMENT

  • 摘要: 高温超导带材因其高载流z能力、低交流损耗等优点, 在超导领域得到了广泛的关注, 然而在带材的应用中出现的力学问题严重阻碍了其应用. 基于此, 本文分析了受外部磁场激励YBCO高温超导带材在超导层局部脱黏后的电磁力学响应. 基于超导临界态Bean模型和弹性力学平面应变方法, 给出了超导薄膜内正应力与基底界面处切应力相关联的控制方程, 基于数值方法研究了超导薄膜内的正应力及基底界面处的切应力随外部磁场的变化规律. 结果显示: 在脱黏区域附近, 超导薄膜内的正应力和基底$\!-\!$薄膜界面处的切应力急剧增大, 该正应力及切应力极易引起超导层的进一步脱黏. 同时, 剪切应力在结构边缘处出现极值. 基底材料的属性, 特别是杨氏模量对结构内的应力影响显著, 在软基底材料结构中, 超导薄膜内将出现较大的正应力, 而基底材料较硬时, 在基底$\!-\!$薄膜界面处将出现较大的剪切应力, 这些因素均会引起超导涂层结构的力学及电学性能的退化. 本文研究可望为超导带材的加工制备及脱黏的处理提供一定的理论指引.

     

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出版历程
  • 收稿日期:  2021-01-24
  • 刊出日期:  2021-05-18

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