| 10T脉冲磁场的亥姆霍兹线圈热和力分析 |
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| 引用本文： | 陈学秒,万连茂,王桂吉,章林文.10T脉冲磁场的亥姆霍兹线圈热和力分析[J].强激光与粒子束,2014,26(5):053201-215. |
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| 作者姓名： | 陈学秒 万连茂 王桂吉 章林文 |
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| 作者单位： | 1.中国工程物理研究院 流体物理研究所, 四川 绵阳 621 900; |
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| 基金项目： | 国家自然科学基金项目(11272295) |
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| 摘 要： | 亥姆霍兹线圈在产生数十T的准静态脉冲磁场的装置中得到广泛应用。以自行研制的一套用于磁压剪实验技术的脉冲磁场发生系统的亥姆霍兹线圈为研究对象,结合装置的电参数,利用有限元软件ANSYS对装置放电过程中线圈的热和力进行了仿真研究。研究结果表明,当装置在线圈中产生上升时间约1.34 ms、幅值14.37 kA的放电电流和10.7 T的磁场时,线圈中的最大温升约150℃,最大应力近0.5 GPa,铜导线中的最大应力约0.2 GPa,线圈导线变形位移小于0.05 mm。基于分析结果,在线圈制作时,选择绝缘层耐温超过200℃、抗拉强度0.5 GPa的铜导线作为线圈绕线,选择抗拉强度达5.8 GPa的柴龙纤维绕制在铜导线外层进行加固,并制作了相应结构的亥姆霍兹线圈对。利用该线圈对进行的放电实验测试结果表明,在满足设计指标的情况下,线圈对结实可靠,可重复使用。
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| 关 键 词： | 脉冲磁场 亥姆霍兹线圈对 有限元分析 热和力分析 |
| 收稿时间： | 2013/10/14 |
Thermal and stress analysis of Helmholtz coil for 10 T pulsed magnetic field generation |
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| Affiliation: | 1.Institute of Fluid Physics,CAEP,Mianyang 621900,China;2.Institute of Computer Application,CAEP,Mianyang 621900,China |
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| Abstract: | The Helmholtz coil is widely used in the device for dozens of Tesla quasi static pulsed magnetic field generation. Based on the quasi-static pulse magnetic field generator for magnetically applied pressure-shear experiments, the thermal and stress of the Helmholtz coil are researched by means of the finite element software ANSYS. The calculated results show that the maximum stress is about 0.5 GPa in the coil pair and 0.2 GPa in the copper wires, and that the displacement of the coil wire is less than 0.05 mm and that the temperature increase in the coil pair is about 150 ℃ when a discharge current flows through the magnet coil pair with a peak current of 14.37 kA and a rising time of 1.34 ms, which can produce 10.7 T magnetic field in the center of the coil pair. These calculated results provide a basis for the optimization design and reinforcement of the coil structure, the copper wire with a tensile strength of 0.5 GPa and insulating layer which can withstand temperature more than 200 ℃ is chosen as the coil wire, and that the zylon fiber with a tensile strength of 5.8 GPa is chosen as the reinforcement around the copper wire, and the corresponding Helmholtz coil structure is designed. This coil pair is used for discharging test and the results show that the coil pair is strong and reliable, and it can be repeatedly used in case of meeting design parameters. |
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| Keywords: | pulsed magnetic field Helmholtz coil pair finite element analysis thermal and stress analysis |
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