摘要
为了分析ITER装置重力支撑结构的动态特性针对ITER重力支撑系统具有周期对称性的结构特点,应用有限元分析软件ANSYS建立了ITER重力支撑结构环向20度三维有限元分析模型,同时采用了精度比较高,而且规模又可以接受的单元网格划分方法,得到了网格划分图。在法兰之间的界面上定义接触单元。采用Block Lanc-zos方法对ITER重力支撑系统进行有限元模态分析,求出了ITER重力支撑系统的前10阶固有频率和振型。模态分析的结果对ITER装置的设计与改进具有一定的指导意义。
To analyze the dynamic characteristics of the gravity support system of ITER, according to the characteristics of cyclic symmetry of the gravity support system of ITER, the 3 - D FEM model with 20 degree sector of the gravity support system was built by using ANSYS. Meantime, a mesh dividing method, which has high precision and an acceptable calculating scale, was used. After the mesh of the model had been divided, the contact elements were defined on the interfaces between flanges. The modal analysis of the gravity support system was made and the first ten natural frequencies and vibration modes of the gravity support system were solved by using Block Lanczos method. The results of the modal analysis can be used to the design and improvement of the gravity support system of ITER.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2007年第6期158-162,共5页
Journal of Sichuan University (Engineering Science Edition)
基金
核工业西南物理研究院ITER计划资助项目
