超导磁体等效材料参数的有限元预测

Prediction of Effective Material Parameters of Superconducting Magnet by Finite Element Method

HT 7U超导托卡马克装置中纵场超导磁体是由多种材料组成的且具有周期性分布的大型复杂的重要结构 ,对其宏观等效材料参数的准确掌握在其结构设计阶段是十分重要的。本文着重介绍了利用小参数展开的渐近均匀化方法对其进行等效处理的过程 ,并采用有限元方法预测出其等效弹性模量与热膨胀系数等 。

The superconducting toroidal field (TF) magnet system is one of the important components of the HT 7U tokamak device. TF coil structure is rather complex, which is of the periodic micro structures. Finite element (FE) analysis of effective mechanical and thermal characteristics of micro heterogeneous superconducting toroidal field coils is conducted in this paper. Some results are necessary to analyses and calculate the stress and deformation and the thermal behavior of the TF coil in HT 7U tokamak device.