大型柱面网壳的非线性稳定性分析  

THE GEOMETRICALLYNONLINEAR STABILITYANALYSIS OFTHE LARGECYLINDRICALRETICULATEDSHELL

作　　者：刘大卫[1] 董石麟[1] 

机构地区：[1]浙江大学

出　　处：《空间结构》1995年第3期14-22,52,共10页Spatial Structures

摘　　要：本文对柱面网壳结构的非线性受力性能进行了详细的研究。为此，推导了适合于弹性大位移分析的空间杆单元的切线刚度矩阵，采用零位移增量范数法对结构变形进行全过程跟踪分析，并编制了相应的计算程序。通过对若干考题及单、双层柱面网壳的计算分析，验证了本文理论的正确可靠，得到了一些有价值的结论。Abstract The geometrically nonlinear stability analysis of the cylindrical reticulated shell is studied in detail,and so a tangent stiffness matrix applicable to the space bar element in elastic large-displacement analysis isestablished by use of a zero-displacement increment norm method to trace and analyse the geometrical nonlin-ear behaviours of a structure,and a geometrically nonlinear finite element computer program is also compiledin this paper. By computing and analysing several examples and single/double layer cylindrical reticulatedshells,the reliabity and accuracy of the given theory are verified,and some useful conclusions are obtained.

关 键 词：柱面网壳 切线刚度 受力性能 结构变形 壳结构 大位移 双层 计算分析 编制 非线性 

分 类 号：TU33[建筑科学—结构工程] TU356