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http://dx.doi.org/10.7781/kjoss.2014.26.3.143

Inelastic Buckling Analysis of Frames with Semi-Rigid Joints  

Min, Byoung Cheol (Dept. of Civil and Environmental Engineering, Induk University)
Publication Information
Journal of Korean Society of Steel Construction / v.26, no.3, 2014 , pp. 143-154 More about this Journal
Abstract
An improved method for evaluating effective buckling length of semi-rigid frame with inelastic behavior is newly proposed. Also, generalized exact tangential stiffness matrix with rotationally semi-rigid connections is adopted in previous studies. Therefore, the system buckling load of structure with inelastic behaviors can be exactly obtained by only one element per one straight member for inelastic problems. And the linearized elastic stiffness matrix and the geometric stiffness matrix of semi-rigid frame are utilized by taking into account 4th terms of taylor series from the exact tangent stiffness matrix. On the other hands, two inelastic analysis programs(M1, M2) are newly formulated. Where, M1 based on exact tangent stiffness matrix is programmed by iterative determinant search method and M2 is using linear algorithm with elastic and geometric matrices. Finally, in order to verify this present theory, various numerical examples are introduced and the effective buckling length of semi-rigid frames with inelastic materials are investigated.
Keywords
Semi-rigid; Buckling; Stability function; Tangent stiffness matrix; Inelastic;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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