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Title: Interactive buckling in sandwich beam-columns
Authors: Wadee, M. Ahmer
Yiatros, Stylianos 
Keywords: Nonlinear mechanics;Buckling;Composites
Category: Civil Engineering
Field: Engineering and Technology
Issue Date: 1-Feb-2011
Publisher: Oxford University Press
Source: IMA Journal of Applied Mathematics, 2011, Volume 76 Issue 1, Pages 146-168
Abstract: Recent work on localized buckling with different core bending theories in sandwich struts is adapted for a sandwich beam-column that combines the effects of bending and compression. The two distinct bifurcations present in the pure compression case are replaced by a single pitchfork bifurcation point that combines local and global buckling behaviour. Several models with a various number of degrees of freedom (DOFs) are developed to account for the explicit effect of end moments. All models are formulated using total potential energy and variational principles, which are used to derive the governing equations that are solved using the numerical continuation package AUTO97. Results are validated with a finite element model formulated in the commercial package ABAQUS. Comparisons with the interactive buckling profiles and the mechanical response in the nonlinear range are very favourable and the models with more DOFs are determined to be superior.
ISSN: 1464-3634
DOI: 10.1093/imamat/hxq061
Rights: © The Author
Type: Article
Appears in Collections:Άρθρα/Articles

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