Buckling analysis of thin-walled functionally graded sandwich box beams

Lanc, Domagoj, Vo, Thuc, Turkalj, Goran and Lee, Jaehong (2015) Buckling analysis of thin-walled functionally graded sandwich box beams. Thin-Walled Structures, 86. 148 - 156. ISSN 0263-8231

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Official URL: http://dx.doi.org/10.1016/j.tws.2014.10.006


Buckling analysis of thin-walled functionally graded (FG) sandwich box beams is investigated. Material properties of the beam are assumed to be graded through the wall thickness. The Euler-Bernoully beam theory for bending and the Vlasov theory for torsion are applied. The non-linear stability analysis is performed in framework of updated Lagrangian formulation. In order to insure the geometric potential of semitangental type for internal bending and torsion moments, the non-linear displacement field of thin-walled cross-section is adopted. Numerical results are obtained for FG sandwich box beams with simply–supported, clamped–free and clamped–clamped boundary conditions to investigate effects of the power-law index and skin-core-skin thickness ratios on the critical buckling loads and post-buckling responses. Numerical results show that the above-mentioned effects play very important role on the buckling analysis of sandwich box beams.

Item Type: Article
Additional Information: Published online first. Print publication date 1-1-2015.
Uncontrolled Keywords: FG sandwich box beams; Buckling; Finite element
Subjects: H200 Civil Engineering
H300 Mechanical Engineering
H400 Aerospace Engineering
Department: Faculties > Engineering and Environment > Architecture and Built Environment
Depositing User: Thuc Vo
Date Deposited: 07 Nov 2014 14:32
Last Modified: 17 Dec 2023 15:33
URI: https://nrl.northumbria.ac.uk/id/eprint/18000

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