结构的二阶渐进弹塑性分析  

Second-order structure analysis with a progressive elastic-plastic numeric model

作　　者：周奎[1] 叶黔元[1] 宋启根[2] 

机构地区：[1]上海理工大学城市建设与环境学院,上海200093 [2]东南大学土木工程学院,南京210096

出　　处：《上海理工大学学报》2002年第3期290-294,共5页Journal of University of Shanghai For Science and Technology

摘　　要：提出一种渐进弹塑性铰模型,考虑构件塑性的渐进变化,构件的塑性发展通过弹簧的刚度变化来模拟,理论分析说明能在一定程度上弥补塑性区方法和塑性铰方法在工程分析中的不足. 给出的算例说明了该模型有较大的实用价值.A progressive elastic-plastic numerical model is proposed. Its main idea is to simulate the gradual process of plasticity development by the variation of the rigidity of springs attached to the ends and to the middle part of the member. Theoretically, this model is accurate and shows its advantage to the advanced structural analysis. Its validity is verified by examples.

关 键 词：塑性铰 塑性区 数值模拟 二阶分析 框架结构 

分 类 号：TU323.5[建筑科学—结构工程]