摘要
本文提出了空间桁架结构基于Euler坐标描述的非线性分析方法.几何非线性分析包括考虑结构发生杆端大侧移、杆端大转角下的平衡条件,导出了杆件切线刚度矩阵的显式.材料非线性包括考虑压杆弹塑性失稳前和失稳后的荷载-位移路径.运用本文模型可追踪空间桁架结构外力与位移关系的全过程.
Nonlinear analysis theory of spatial truss structures under Euler coordinate system is presented. Geometrical nonlinearity covers large member end translation and rotation, explicit member tangent stiffness matrix is derived, thrust dispacement path before and after the maximum load carrying capacity is unbodied.The whole range load displacement corelation can be traced by the analysis model.
出处
《建筑结构》
CSCD
北大核心
1997年第5期28-31,共4页
Building Structure
关键词
空间结构
桁架
几何非线性
材料非线性
space trusses
geometrical nonlinearity
material nonlinearity
