空间钢框架几何非线性分析的一种新单元  

A NEW ELEMENT FOR GEOMETRIC NONLINEAR ANALYSIS OF THREE-DIMENSIONAL STEEL FRAMES

作　　者：许红胜[1] 周绪红[1] 舒兴平[1] 

机构地区：[1]湖南大学,长沙410082

出　　处：《工程力学》2003年第4期39-44,共6页Engineering Mechanics

摘　　要：介绍了一种新的用于空间钢框架几何非线性分析用的单元,可有效考虑P-δ效应的影响,达到了一个单元模拟一根杆件的精度要求,用于非线性分析是行之有效的,并可使截断误差的影响得到满意的控制,计算实例证明,该单元是可靠和高效率的。This paper presents a new element for geometric nonlinear analysis of three-dimensional steel frames. The P-δeffect is fully taken into consideration in this new pointwise equilibrating polynomial element so that it is able to model each member with one element. The implementation of the element in a nonlinear analysis program is straightforward, and it does not lead to a significant numercial truncating error in the analysis. The numerical studies demonstrate the effectiveness and efficiency of the new element.

关 键 词：钢结构 二阶分析 几何非线性 薄壁梁单元 

分 类 号：TU318[建筑科学—结构工程]