| Buckling Analysis of TF Coil Inner Leg for Central Solenoidless Tokamak |
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| 引用本文： | 宋云涛 杨庆喜 Satoshi NISHIO. Buckling Analysis of TF Coil Inner Leg for Central Solenoidless Tokamak[J]. 等离子体科学和技术, 2006, 8(4): 468-472 |
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| 作者姓名： | 宋云涛 杨庆喜 Satoshi NISHIO |
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| 作者单位： | [1]Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China [2]Department of Fusion Plasma Research, Japan Atomic Energy Research Institute,Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan |
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| 基金项目： | supported by National Natural Science Foundation of China （No. 10405024） and the Ministry of Education, Culture, Sports, Science and Technology （MEXT） Nuclear Researchers Exchange Programme of Japan .The authors would like to thank Professor Konishi of Kyoto University, and the head of the laboratory of the reactor system in JAERI, Dr Tobita, for their support and encouragement. |
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| 摘 要： |
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| 关 键 词： | 托卡马克装置 环形场线圈 屈曲分析 螺线管 纵横比 |
| 收稿时间： | 2004-06-01 |
| 修稿时间： | 2004-06-01 |
Buckling Analysis of TF Coil Inner Leg for Central Solenoidless Tokamak |
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| SONG Yuntao, YANG Qingxi, Satoshi NISHIO. Buckling Analysis of TF Coil Inner Leg for Central Solenoidless Tokamak[J]. Plasma Science & Technology, 2006, 8(4): 468-472 |
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| Authors: | SONG Yuntao YANG Qingxi Satoshi NISHIO |
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| Affiliation: | 1 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China 2 Department of Fusion Plasma Research, Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan |
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| Abstract: | The central post is one of the critical components for the low aspect ratio tokamak, which endures not only a tremendous ohmic heating because it carries a rather high current, but also a large neutron heating and irradiation owing to the plasma operation. The DS copper alloy Glidcop AL-25[8] was chosen as the conductor material for its adequate mechanical properties and physics properties. The central post has a cylindrical structure with lots of cooling channels. The length of the central post for the next generation of nuclear fusion spherical tokamaks will be more than 10 m or 20 m. The structural stability is very crucial. When the applied load is larger than the structure critical buckling load, the device will lose its stability and collapse. In order to calculate the critical buckling load, a 1/6-segment finite element model was used and the force acting on the central post was simulated. The results showed that the vertical compressive stresses mainly affect the stability of the central post. The linear buckling analysis results with finite element method based on small deformation theory were given in this paper. The relation curves and functions for buckling factor, depending on the different lengths and the radius of the central post, the diameter of cooling channel and the maximum allowable current density, were also shown. |
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| Keywords: | low aspect ratio tokamak toroidal field coil central post buckling analysis |
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