摘要
采用ＦＥＭ 法分析了一个单层板片空间结构的动力特性及其在地震作用下的双重非线性时程反应。推导了三维桁元、梁元和三角形板壳元在ＵＬ描述下的双重非线性切线刚度矩阵，通过对增量形式虚功方程作线性化处理来减少计算量，考虑了梁／杆与板对应节点定位偏差和节点焊接安装误差，进而编制计算程序。
In this paper,FEM is used to analyse the dynamic characteristic and dual nonlinear time\|history response of a single layer sheet\|space structure undergoing earthquake. Here, the dual nonlinear tangental stiffness matrixes of binodal spatial beam element and triangular plate/shell element of 6 nodal DOF to Update\|Lagrange coordinate systems are derived, the incremental equation of virtual work is linearized to simplified calculation,beam\|plate coupling,deviation of principal nodes and subordinated nodes, is considered, including the initial defect of nodal location error, and then developed a FEM program.
出处
《工业建筑》
EI
CSCD
北大核心
1999年第10期41-44,36,共5页
Industrial Construction
基金
国家自然科学基金
关键词
板片空间结构
非线性
动力特性
地震作用
sheet\|space structure dual nonlinearity earthquake action nonlinear time\|history analysis
