Numerical evaluation of buckling behavior in space structure considering geometrical parameters with joint rigidity

查看全文 作　　者：Su-Deok [1]Shon;Kyung-Ju [2]Hwang;Seung-Jae [1]Lee

机构地区：[1]School of Architectural Engineering, Korea University of Technology and Education;[2]School of Architecture, University of Seoul

出　　处：《Journal of Central South University》索引2014年第21卷第3期,共10页

基　　金：Project(12 High-tech Urban C11) supported by High-tech Urban Development Program of Ministry of Land,Transport and Maritime Affairs,Korea 摘　　要：The buckling behavior of single layer space structure is very sensitive. The joint rigidity, moreover, is one of the main factors of stability which may determine the entire failure behavior. Thus, the reasonable stiffness of joint system, which is neither total pin assumption nor perfect fix condition, is very important to apply to the real single layer space one. Therefore, the purpose of this work was to investigate the buckling behavior of single layer space structure, using the development of the upgraded stiffness matrix for the joint rigidity. To derive tangential stiffness matrix, a displacement function was assumed using translational and rotational displacement at the node. The geometrical nonlinear analysis was simulated not only with perfect model but also with imperfect one. As a result, the one and two free nodal numerical models were investigated using derived stiffness matrix. It was figured out that the buckling load increases in proportion to joint rigidity with rise-span ratio. The stability of numerical model is very sensitive with the initial imperfection, responding of bifurcation in the structure. 关键词：空间结构屈曲行为数值评价几何参数刚性几何非线性分析刚度矩阵合资

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Numerical evaluation of buckling behavior in space structure considering geometrical parameters with joint rigidity

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