| 超导磁体耐受过电流冲击稳定性的有限元方法研究 |
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| 引用本文： | 白质明,吴春俐.超导磁体耐受过电流冲击稳定性的有限元方法研究[J].东北大学学报(自然科学版),2008,29(12):1799-1802. |
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| 作者姓名： | 白质明 吴春俐 |
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| 作者单位： | [1]东北大学理学院,辽宁沈阳110004 [2]东北大学信息科学与工程学院,辽宁沈阳110004 |
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| 基金项目： | 国家自然科学基金资助项目(50777006) |
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| 摘 要： | 利用有限元分析软件COSMOS4.0对Bi2223/Ag超导带材绕制的超导磁体在过电流冲击下的失超行为进行了计算机模拟仿真计算.通过编写VB数据分析程序对模拟结果进行分析,得到磁体绕组中央的横向和纵向的温度分布随时间的变化规律,并获得超导磁体在20 K环境温度时,不同过电流脉冲下绕组内的最高温升曲线.把过电流脉冲导致的局部高温与在此温度下的最小传播电流联系起来,提出以过电流脉冲的允许持续时间作为评价超导磁体抗电流冲击稳定性的依据.这为研究高温超导磁体的运行稳定性提供了重要参考.
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| 关 键 词： | 超导磁体 稳定性 过电流脉冲 最小传播电流 有限元方法 |
FEM Study on Stability of Superconducting Magnet Withstanding Over-Current Impulse |
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| BAI Zhi-ming,WU Chun-li.FEM Study on Stability of Superconducting Magnet Withstanding Over-Current Impulse[J].Journal of Northeastern University(Natural Science),2008,29(12):1799-1802. |
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| Authors: | BAI Zhi-ming WU Chun-li |
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| Institution: | BAI Zhi-ming1,WU Chun-li2(1.School of Sciences,Northeastern University,Shenyang 110004,China,2.School of Information Science & Engineering,China.) |
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| Abstract: | The quench behavior was simulated using the FEM software COSMOS 4.0 for a superconducting magnet which was wound by Bi2223/Ag tape was subjected to an over-current impulse.Programming the VB data analysis to discuss the simulation results,how the transverse and longitudinal temperature distributions change in the core of the magnet winding were known,thus giving the maximum temperature curves in the winding of superconducting magnet under different over-current impulses at 20 K as ambient temperature.Then,t... |
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| Keywords: | superconducting magnet stability over-current impulse minimum propagation current finite element method(FEM) |
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