计算力学学报Issue(6)：757-762,6.DOI:10.7511/jslx201306002
细长结构几何非线性分析的子结构方法
Substructure methods in geometric nonlinear analysis of slender structures
摘要
Abstract
Along the longitudinal direction ,a slender structure can be divided into several substructures on w hich an embedded coordinate frame is defined ,there by total nodal displacements can be decomposed into the rotation of the frame and the small relative displacements with respect to the frame .Taking advantage of such deformation characteristics ,we give the expressions of frame rotations and nodal dis-placements as well as their virtual variations ,which are compatible with the definition of the embedded coordinate frames .Consequently ,we presented a new substructure method for geometrically nonlinear analysis of slender structures ,in w hich displacements of each substructure are reduced to the displace-ments of its boundary nodes .Compared to traditional methods of geometrically nonlinear analysis ,the present method can greatly reduce the solution scale in case of not losing precision .Finally ,an example show s the effectiveness of the method .关键词
结构力学/几何非线性/子结构/大转动Key words
structural mechanics/geometric nonlinearity/substructures/large rotation分类
数理科学引用本文复制引用
齐朝晖,孔宪超,方慧青..细长结构几何非线性分析的子结构方法[J].计算力学学报,2013,(6):757-762,6.基金项目
国家自然科学基金（10972044）资助项目． （）
