Nonlinear mode interaction in equal-leg angle struts susceptible to cellular buckling
File(s)
Accepted version
Author(s)
Bai, L
Wang, F
Wadee, MA
Yang, J
Type
Journal Article
Abstract
A variational model that describes the interactive buckling of a thin-walled equal-leg angle strut under pure axial compression is presented. A formulation combining the Rayleigh-Ritz method and continuous displacement functions is used to derive a system of differential and integral equilibrium equations for the structural component. Solving the equations using numerical continuation reveals progressive cellular buckling (or snaking) arising from the nonlinear
interaction between the weak-axis flexural buckling mode and the strong-axis flexural-torsional buckling mode for the first time - the resulting behaviour being highly unstable. Physical experiments conducted on 10 cold-formed steel specimens are presented and
the results show good agreement with the variational model.
interaction between the weak-axis flexural buckling mode and the strong-axis flexural-torsional buckling mode for the first time - the resulting behaviour being highly unstable. Physical experiments conducted on 10 cold-formed steel specimens are presented and
the results show good agreement with the variational model.
Date Issued
2017-11-30
Date Acceptance
2017-09-28
Citation
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017, 473 (2207), pp.1-22
ISSN
1364-5021
Publisher
The Royal Society
Start Page
1
End Page
22
Journal / Book Title
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume
473
Issue
2207
Copyright Statement
© 2017 The Author(s) Published by the Royal Society. All rights reserved.
Identifier
https://royalsocietypublishing.org/doi/10.1098/rspa.2017.0583
Subjects
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
structural stability
mode interaction
snaking
nonlinear mechanics
thin-walled structures
I-SECTION STRUTS
SANDWICH STRUCTURES
COLUMNS
COMPRESSION
MEMBERS
BEAMS
LOCALIZATION
SLENDERNESS
BEHAVIOR
DESIGN
mode interaction
nonlinear mechanics
snaking
structural stability
thin-walled structures
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Publication Status
Published
Article Number
20170583
Date Publish Online
2017-11-01