A quasi-3D theory for vibration and buckling of functionally graded sandwich beams

Article


Vo, T. P., Thai, H., Nguyen, T., Inam, F. and Lee, J. 2014. A quasi-3D theory for vibration and buckling of functionally graded sandwich beams. Composite Structures. 119, pp. 1-12. https://doi.org/10.1016/j.compstruct.2014.08.006
AuthorsVo, T. P., Thai, H., Nguyen, T., Inam, F. and Lee, J.
Abstract

This paper presents a finite element model for free vibration and buckling analyses of functionally graded (FG) sandwich beams by using a quasi-3D theory in which both shear deformation and thickness stretching effects are included. Sandwich beams with FG skins-homogeneous core and homogeneous skins-FG core are considered. By using the Hamilton’s principle, governing equations of motion for coupled axial–shear–flexural–stretching response are derived. The resulting coupling is referred to as fourfold coupled vibration and buckling. Numerical examples are carried out to investigate the thickness stretching effect on natural frequencies and critical buckling loads as well as mode shapes of sandwich beams for various power-law indexes, skin–core–skin thickness ratios and boundary conditions.

JournalComposite Structures
Journal citation119, pp. 1-12
ISSN0263-8223
Year2014
PublisherElsevier
Accepted author manuscript
License
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1016/j.compstruct.2014.08.006
Web address (URL)https://doi.org/10.1016/j.compstruct.2014.08.006
Publication dates
Online17 Aug 2014
Publication process dates
Deposited28 Apr 2020
Copyright holder© 2014 Elsevier
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License: CC BY-NC-ND 4.0
File access level: Anyone

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