平面刚架弹塑性稳定的一种数值方法  

A Numerical Method for Computing the Elastoplastic Stability of Plane Rigid Frame

作　　者：林赞生 

机构地区：[1]华侨大学土木工程系

出　　处：《华侨大学学报（自然科学版）》1995年第1期34-39,共6页Journal of Huaqiao University(Natural Science)

摘　　要：在等截面杆件稳定问题理论解的基础上，提出结构进入弹塑性阶段其变刚度杆件的位移模式，并基于虚功原理导出了弹塑性单元的切线刚度矩阵，其精确度为９５％．A displacement model of bar with variable rigidity, applicable to the structure entering into elastoplastic level, is presented. It is based on theoretical solution to the stability of bar with constant section. A tangent rigidity matrix of elastoplastic unit is also derived on the basis of virtual work principle. The method is indicated by calculating example to be of higher accuracy.

关 键 词：弹塑性 刚架 数值方法 稳定性 

分 类 号：TU328[建筑科学—结构工程]