Journal
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
Volume 25, Issue 18, Pages 1877-1886Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0731684406069914
Keywords
dynamic stability; non-homogeneous materials; critical parameters
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In this study, the dynamic stability problem of a cylindrical shell composed of non-homogeneous orthotropic materials with Young's moduli and density varying continuously in the thickness direction under the effect of an axial compressive load varying with a parabolic function of time is considered. At first, the fundamental relations and the modified Donnell type dynamic stability equations of a non-homogeneous orthotropic cylindrical shell are set up. Applying the Galerkin method, first, and then the Ritz-type variational method, the closed-form solutions have been derived for the dynamic critical axial load and dynamic factor. Finally, carrying out some computations, the effects of the non-homogeneity of the orthotropy ratio and the axial loading parameter on the critical parameters have been studied. Comparing results with those in the literature validates the present analysis.
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