Elastic Buckling Analysis of Uniaxially Compressed CCCC Stiffened Isotropic Plates

This paper reports a research study that investigated buckling of stiffened rectangular isotropic plates elastically restrained along all the edges (CCCC) under uniaxial in-plane load, using the work principle approach. The stiffeners were assumed to be rigidly connected to the plate. Analyses for c...

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Bibliographic Details
Published in:International Journal of Applied Mechanics and Engineering 2020-12, Vol.25 (4), p.84-95
Main Authors: Ibeabuchi, V.T., Ibearugbulem, O.M., Ezeah, C., Ugwu, O.O.
Format: Article
Language:English
Subjects:
Aspect ratio
Boundary conditions
buckling
Elastic analysis
Elastic buckling
Energy methods
governing equation
Plates
polynomial function
Shape functions
Stiffeners
Stiffness
Trigonometric functions
uniaxially stiffened plate
work principle method
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Summary:This paper reports a research study that investigated buckling of stiffened rectangular isotropic plates elastically restrained along all the edges (CCCC) under uniaxial in-plane load, using the work principle approach. The stiffeners were assumed to be rigidly connected to the plate. Analyses for critical buckling of stiffened plates were carried out by varying parameters, such as the number of stiffeners, stiffness properties and aspect ratios. The study involved a theoretical derivation of a peculiar shape function by applying the boundary conditions of the plate on Taylor Maclaurin’s displacement function and substituted on buckling equation derived to obtain buckling solutions. The present solutions were validated using a trigonometric function in the energy method from previous works. Coefficients, , were compared for various numbers of stiffeners and the maximum percentage difference obtained within the range of aspect ratios of to is shown in Figs 2 - 7. A number of numerical examples were presented to demonstrate the accuracy and convergence of the current solutions.
ISSN:1734-4492
2353-9003
DOI:10.2478/ijame-2020-0051