局部双层网壳结构非线性屈曲分析  

Nonlinear Analysis of the Partial Double Layer Sphterical Reticulatea Shell

作　　者：谢志红[1] 李丽娟[1] 叶伟年[1] 郭永昌[1] 陆伟文[1] 

机构地区：[1]广东工业大学建设学院,广东广州510643

出　　处：《广东工业大学学报》2003年第3期5-8,共4页Journal of Guangdong University of Technology

基　　金：广东省自然科学基金(990148);广东省教育厅自然科学重点项目资助(200027)

摘　　要：以局部双层球面网壳为研究对象,采用Newton-Raphon增量迭代及弧长法对节点承受均布载荷的网壳进行了非线性有限元分析,对比研究了单层、双层及局部双层网壳的极限屈曲荷载及位移。研究结果表明,局部双层网壳能够明显改善单层网壳的稳定性能,提高其节点屈曲载荷。By Newton-Raphon increment iterative method and arc-length method, the nodes of partial dou- ble layer spherical reticulated shell supporting uniform distributed forces are analyzed with nonlinear finite element theory. The ultimate buckling load and displacement of single, double layer and partial double layer spherical reticulated shell are studied in comparison to each other. The research findings suggest that the use of partial double layer spherical reticulated shell can improve the stability of single one and promote the ultimate buckling load of its nodes.

关 键 词：局部双层球面网壳 非线性屈曲 弧长法 

分 类 号：TU745.2[建筑科学—建筑技术科学]