摘要
本文给出了一个基于自平衡力的弹塑性结构动力反应分析的新方法。详细叙述了方法的原理和过程，并对用改进的Ｔａｋｅｄａ滞变模型描述的梁单元框架结构给出了具体的分析方法。这个方法与传统的方法不同，在分析中不必修正结构的刚度矩阵，而代之以计算代表塑性铰变形引起的应力重分布的动力自平衡力，因而大大地节省了计算机时。最后通过算例对本文方法进行了验证。
In this paper, a new method of nonlinear dynamic response analysis of structures based on pattern of self equilibrating stresses is given. its theory and procedure of anlaysis are described and its theoretical formulas are deduced in detail. In the meantime, the particular analysis methods used for the framed structures modelled by girder element of revised Takeda hysteretic model are given. The difference between this new method and classical methods is that rather than updating and inverting the stiffness matrix, a pattern of self equilibrating stresses that resists the plastic deformation is computed instead. Therefore, this method can save time significantly. Finally, this method is checked by a corresponding example.,
出处
《地震工程与工程振动》
CSCD
北大核心
1997年第4期9-17,共9页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金
地震科学联合基金
关键词
自平衡应力
弹塑性
动力反应分析
, self equilibrating stresses, elasto plastic, dynamic response analysis
