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Length effects on interactive buckling in thin-walled rectangular hollow section struts

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Title: Length effects on interactive buckling in thin-walled rectangular hollow section struts
Authors: Shen, J
Wadee, MA
Item Type: Journal Article
Abstract: A variational model formulated using analytical techniques describing the nonlinear coupling between local and global buckling modes within an elastic thin-walled rectangular hollow section strut is presented. A system of nonlinear differential and integral equations subject to boundary conditions is derived and solved using numerical continuation techniques. The nonlinear behaviour of four representative lengths is investigated, which are characterized by the post-buckling equilibrium paths. The numerical results from the variational model are validated using a nonlinear finite element model and largely show excellent comparisons, particularly for the practically important ultimate load and the initial post-buckling behaviour. Boundaries for the four distinct length-dependent zones are identified and the most unstable zone is demonstrated to have a considerably narrower length range than previously determined for practical corner boundary conditions within the cross-section.
Issue Date: 1-Jul-2018
Date of Acceptance: 4-Apr-2017
URI: http://hdl.handle.net/10044/1/46264
DOI: 10.1016/j.tws.2017.04.006
ISSN: 0263-8231
Publisher: Elsevier
Start Page: 152
End Page: 170
Journal / Book Title: Thin Walled Structures
Volume: 128
Issue: 1
Copyright Statement: © 2017 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Engineering, Civil
Engineering, Mechanical
Mechanics
Engineering
Coupled instabilities
Global buckling
Local buckling
Cellular buckling
Mode interaction
Variational modelling
Finite element validation
GLOBAL MODE INTERACTION
FINITE STRIP METHOD
COMPRESSION MEMBERS
STRONG-AXIS
IMPERFECTION SENSITIVITY
SANDWICH STRUCTURES
CYLINDRICAL-SHELLS
STIFFENED PLATES
BEAM-COLUMNS
BOX COLUMNS
0901 Aerospace Engineering
0905 Civil Engineering
0913 Mechanical Engineering
Civil Engineering
Publication Status: Published
Online Publication Date: 2017-11-14
Appears in Collections:Civil and Environmental Engineering
Faculty of Engineering