矩形刚架刚度矩阵的快速集成方法  

A Rapid Method for Integrating the Stiffness Matrix of Rectangular Frames

作　　者：陈绪军[1,2] 杨勇新[1] 戴木香[2] 胡玲[1] 

机构地区：[1]华侨大学土木工程学院,福建泉州362021 [2]九江学院土木工程学院,江西九江332005

出　　处：《长江大学学报（自科版）（上旬）》2008年第03X期297-300,共4页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

摘　　要：通过理论推导，提出了由矩形刚架局部坐标系下的单元刚度矩阵直接得到整体坐标系下的单元刚度矩阵的公式，介绍了矩形刚架局部坐标系下的单元刚度矩阵直接集成整体刚度矩阵的快速方法，该方法能有效提高矩形刚架刚度矩阵的计算效率。As for the structure of axial deformation,it costed huge computation when calculating the element stiffness matrix and the assembled stiffness matrix under the global coordinate system of the structure by using the methods of coordinate change and local integration for element localization vector. Through the theoretical deducing,this paper establishes a formula of the assembled stiffness matrix and introduces a rapid method for the first time,by which the element stiffness matrix under the global coordinate system can be directly obtained from the element stiffness matrix under the local coordinate system of the rectangle frame. The formula and method given by the paper provides references to research workers,and it can effectively improve the manual calculation efficiency of the stiffness matrix of rectangular frame.

关 键 词：单元刚度矩阵 单元集成法 整体刚度矩阵 

分 类 号：TU313[建筑科学—结构工程]