Bifurcation of Locally Buckled Channel Columns (No. R760)
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Open Access
Type
Report, ResearchAbstract
The report derives the governing equations for the fundamental and bifurcated states of members with singly symmetric cross-sections that locally buckle in the fundamental state. The members are subject to pure compression and assumed to be geometrically perfect in the overall ...
See moreThe report derives the governing equations for the fundamental and bifurcated states of members with singly symmetric cross-sections that locally buckle in the fundamental state. The members are subject to pure compression and assumed to be geometrically perfect in the overall sense. The method of analysis uses elastic and inelastic geometric nonlinear finite strip buckling analyses to determine the tangent rigidities of the locally buckled section. These rigidities are substituted into the equations for overall flexural and flexural-torsional buckling to obtain the bifurcation loads. The effect of yielding is highlighted through a parametric study. The overall bifurcation loads are compared with a series of tests of fixed-ended plain channel columns. The variation of the bifurcation loads with the length is shown to be in good agreement with the tests. The bifurcation loads are shown to be sensitive to the magnitudes of local and overall geometric imperfections.
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See moreThe report derives the governing equations for the fundamental and bifurcated states of members with singly symmetric cross-sections that locally buckle in the fundamental state. The members are subject to pure compression and assumed to be geometrically perfect in the overall sense. The method of analysis uses elastic and inelastic geometric nonlinear finite strip buckling analyses to determine the tangent rigidities of the locally buckled section. These rigidities are substituted into the equations for overall flexural and flexural-torsional buckling to obtain the bifurcation loads. The effect of yielding is highlighted through a parametric study. The overall bifurcation loads are compared with a series of tests of fixed-ended plain channel columns. The variation of the bifurcation loads with the length is shown to be in good agreement with the tests. The bifurcation loads are shown to be sensitive to the magnitudes of local and overall geometric imperfections.
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Date
1997Publisher
School of Civil Engineering, The University of SydneyLicence
Copyright All Rights ReservedRights statement
This publication may be redistributed freely in its entirety and in its original form without the consent of the copyright owner. Use of material contained in this publication in any other published works must be appropriately referenced, and, if necessary, permission sought from the author.Faculty/School
Faculty of Engineering, School of Civil EngineeringDepartment, Discipline or Centre
Centre for Advanced Structural EngineeringSubjects
Civil EngineeringShare