摘要
由于反应堆吊篮结构复杂，采用有限元法对其进行动力分析时，很难直接对结构的所有细节都作真实模拟。为此，根据吊篮结构及动力分析的特点，对吊篮结构的支承边界条件和局部复杂结构作了必要的简化，建立了两类简化模型。同时，计算了两个试验模型的振动特性。经对计算频率值与试验实测频率值的比较表明：本吊篮支承边界条件及局部结构的简化方法是合理、可行的。
A barrel, its structure is very complex. When analyzing it's ibration characteristics, the supporting boundary conditions and some complex local structure are hardly to model. In this paper, some methods of simplifying the supporting boundary conditions and some complex local structures are presented. The dynamical finite element model of the structure of the core barrel is obtained. The comparison between the calculated frequencies of the structure and the test ones shows that the simplified method presented in this paper is reasonable and feasible.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2000年第4期323-327,共5页
Nuclear Power Engineering
基金
国家自然科学基金!19872058
关键词
堆芯吊蓝
振动特性
有限元模型
反应堆
Core barrel
Vibration characteristic
Simplified method
Finite element model
