摘要
基于循环对称特性建立了ITER环向场(TF)线圈及重力支撑结构系统的整体力学模型,通过有限元数值模拟计算了结构的前10阶固有频率和模态振型,进而利用谱分析方法得到了结构在已知地震谱条件下的位移响应分布。通过与已有单自由度简化模型的理论计算结果相对比,验证了计算模型和结果的有效性。
A finite element model of the toroida field （TF） coil and gravity support system is established at first by taking its cyclic symmetry condition into account. The first ten order natural frequencies and their corresponding modal vectors of the system are calculated then by using the ANSYS software. Based on these modal information and the spectrum analysis method, the displacement response distribution of the TF system is obtained finally by using the standard seismic spectrum given in ITER EDA report. Furthermore, the feasibility of the numerical model is validated by comparing its results with those of a simplified model of single degree of freedom.
出处
《核聚变与等离子体物理》
CAS
CSCD
北大核心
2013年第1期60-65,共6页
Nuclear Fusion and Plasma Physics
基金
国家磁约束核聚变项目资助(2009GB104002)
关键词
环向场线圈
重力支撑
地震响应
谱分析法
Toroida field coils
Gravity support
Seismic response
Spectrum analysis
