摘要
建立筒承式群仓串联多质点体系简化计算模型 ,计算该模型的质量矩阵 ,直接用有限元分析并计算的前两阶频率与振型 .由于出现自由度缩聚现象而使结构的模态矩阵无法满足对质量矩阵的正交性 ,采用 Baruch法对模态矩阵进行修正 ,从而实现模态的正交性 。
In the paper, finite element models of cylindrical multi silos supported by cylinder are established. The Baruch Method is adopted to update the results of SSAP91. Then the Precise natural vibration characteristics of multi silos can be applied to the analysis of the earthquake action of multi solos.
出处
《青岛建筑工程学院学报》
2003年第1期75-78,共4页
Journal of Qingdao Institute of Architecture and Engineering
关键词
Barch法
筒承式群仓
地震
有限元模型
模型修正
finite element models, models updating, Baruch method, cylindrical multi silos supported by cylinder.
