Abstract:

In order to acquire the anti-seismic capability of ITER external bypass, response spectrum method has been carried out to study the seismic performance through finite element software ANSYS Workbench. Maximum equivalent stress, directional deformation and reaction force of fixed supports of the external bypass structure are analyzed under the design seismic spectrum provided by ITER organization. The analysis results show that the maximum equivalent stress is not more than 8.3MPa, and the maximum directional deformation is not more than 2.6mm. The results above indicate that the external bypass structure can meet anti-seismic requirements. In addition, the results also provide reference for the foundation design of the external bypass, as well as make a contribution to the follow-up seismic design work.

Key words: ITER external bypass, Seismic analysis, Response spectrum method, Workbench

摘要：

利用有限元仿真软件ANSYS Workbench，结合反应谱法对ITER极向场变流器外旁通设备进行了地震分析。具体分析了在ITER提供的设计地震频谱下，外旁通结构所受的最大等效应力、方向位移以及固定支撑位置的反作用力。分析结果表明，外旁通最大等效应力不超过8.3MPa，最大方向位移不超过2.6mm。以上数据表明，外旁通结构能够满足抗震要求。

关键词: ITER外旁通, 地震分析, 反应谱法, Workbench