摘要
本文采用组合结构有限无法进行组合网壳结构的几何非线性稳定分析，推导了Ｔ．Ｌ．坐标系下，几何非线性分析中一般空间梁元及满足离散Ｋｉｒｃｈｈｏｆｆ假定三角形板壳元的有限元公式，采用广义增量法时结构变形进行全过程跟踪分析，并编制了相应的计算程序。通过对若干考题及组合网壳算例的计算分析，验证了本文理论与程序的正确可靠，得到了一些有价值的结论。
AbstractThe geometrically nonlinrar stability analysis of the composite reticulated shell is studiedin this paper by composite structure nonlinear finite element method. All explicit formulations of thespace beaw elmnent and discrete Kirchhoff element to Total-Lagrange coordinate systems arederived, and the nonlinear load - displacement relations of the structuivareanalyzed by a new methodthe generalized incremental method. A geometrically nonlinerir finite element computer program isalso compiled in this paper.The numerical examplts show that the theory and the program aretorrect,and some useful conclusions are obtained.
出处
《空间结构》
CSCD
1994年第2期17-25,共9页
Spatial Structures
基金
国家自然科学基金
建设部科技发展基金联合资助
