摘要
由于可折叠特性的需要,折叠结构具有一些特殊的约束,难以利用通用的有限元软件直接求解。利用主从自由度约束来模拟剪式单元的真实力学模型,编制折叠网架的动力分析软件,利用振型分解反应谱法和时程分析法对折叠网架的竖向地震响应进行分析,得到一些对工程设计有益的结论。
Foldable trusses can not be computed by general FEA software because of its especial constraint characteristics.The real mechanical model of pantographs is analyzed with master/slave freedom technique in this paper,and the global stiffness matrix is assembled under hybrid-coordinate.A FEA program is developed to computer foldable trusses,including response spectrum method and time history method.Some important static and dynamic behaviors of foldable trusses are introduced according to numerical results.
出处
《工业建筑》
CSCD
北大核心
2010年第S1期430-432,共3页
Industrial Construction
关键词
可折叠结构
主从自由度
竖向地震响应
foldable trusses
master/slave freedom
vertical seismic response
