Exact refined buckling solutions for laminated plates under uniaxial and biaxial loads

This paper presents a unified Lévy-type solution procedure for the buckling analysis of both thin and thick composite plates under biaxial loads. The plates are simply-supported at two opposite edges, while the two remaining sides are subjected to any combination of simply-supported, clamped and fre...

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Bibliographic Details
Published in:Composite structures 2015-09, Vol.127, p.356-368
Main Authors: Vescovini, Riccardo, Dozio, Lorenzo
Format: Article
Language:English
Subjects:
Buckling
Composite structures
Equivalence
Exact solutions
Laminates
Mathematical analysis
Plates
Plates (structural members)
Three dimensional
Variable-kinematic theories
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Summary:This paper presents a unified Lévy-type solution procedure for the buckling analysis of both thin and thick composite plates under biaxial loads. The plates are simply-supported at two opposite edges, while the two remaining sides are subjected to any combination of simply-supported, clamped and free conditions. The problem is formulated in the context of a variable-kinematic approach, offering the advantage of automatically handling theories of various order. Both layerwise and equivalent single layer theories are considered. The governing equilibrium equations are derived analytically from the Principle of Virtual Displacements (PVD), and are solved exactly referring to the Lévy-type procedure. The accuracy of the predictions is demonstrated by comparison with results available in literature, including exact 3D solutions. A comprehensive set of benchmark results is provided for plates subjected to different loading and boundary conditions and characterized by various width-to-thickness ratios.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2015.03.003