摘要
为模拟地震作用时杆件在变动轴力和双向弯曲的耦合特点,基于简化纤维模型的多弹簧单元模型近年被广泛应用。本文作者在相关论文中提出了考虑剪切变形弹塑性刚度影响的多弹簧模型空间梁柱单元,杆件的计算模拟精度除了取决于单元模型之外,还决定于两个重要参数:弹簧位置及个数布置、塑性区长度,本文将针对其进行参数分析并提出合理建议取值。本文最后还提出了模拟杆件残余应力的合理弹簧布置方式。
To simulate the coupling behavior of member subjected to variable axial force and bi-bending, the multi-spring model is applied widely. Author has presented an improved model which consideririgthe plastic stiff influence of plastic-regio ly depends on the element model b n shear deformation in other paper. The simulation precisi;rn not onut also closely relates to two important parameters： the layout of spring and length of plastic region. Paper focuses on the two parameter analysis and puts forward reasonable suggestions. At last, paper also offers the appropriate spring layout to simulate the residual stress.
作者
李国强
方明霁
孙飞飞
张强
Li, Guo-Qiang[1]; Fang, Ming-Ji[2]; Sun, Fei-Fei[1]; Zhang, Qiang[2]
出处
《计算力学学报》
EI
CAS
CSCD
北大核心
2008年第1期134-138,共5页
Chinese Journal of Computational Mechanics
基金
上海优秀青年教师基金(5030604)资助项目
关键词
多弹簧模型
剪切变形
塑性区长度
弹簧布置
multi-spring model
shear deformation
length of plastic zone
layout of spring
