Assumed strain finite elements for buckling and vibration analysis of initially stressed damped composite sandwich plates
Assumed strain finite elements for buckling and vibration analysis of initially stressed damped composite sandwich plates
This paper deals with buckling and vibration analysis of initially stressed damped composite sandwich plates using assumed strain finite elements. A family of plate bending elements containing nine degrees of freedom per node are developed based on a refined higher-order shear deformation theory. The higher-order theory contains in-plane displacements that are expanded to include the higher-order terms in the Taylor series expansion as a result of which there is no need for shear correction factors. The popular assumed strain concept is used to ensure that the developed four- and nine-node elements pass the patch test and show no signs of shear locking and spurious zero energy modes in the present finite element formulations. Parametric studies are carried out to study the behavior of length to thickness ratios, boundary conditions, fiber orientations on vibration, and buckling of damped composite sandwich plates.
stability, vibration, composite sandwich plates, higher-order shear deformation theory, finite element method, assumed strain concept
307-334
Nayak, A.K.
20538650-e051-4cbc-803c-0398fc181aaf
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
2005
Nayak, A.K.
20538650-e051-4cbc-803c-0398fc181aaf
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Nayak, A.K. and Shenoi, R.A.
(2005)
Assumed strain finite elements for buckling and vibration analysis of initially stressed damped composite sandwich plates.
Journal of Sandwich Structures and Materials, 7 (4), .
(doi:10.1177/1099636205050084).
Abstract
This paper deals with buckling and vibration analysis of initially stressed damped composite sandwich plates using assumed strain finite elements. A family of plate bending elements containing nine degrees of freedom per node are developed based on a refined higher-order shear deformation theory. The higher-order theory contains in-plane displacements that are expanded to include the higher-order terms in the Taylor series expansion as a result of which there is no need for shear correction factors. The popular assumed strain concept is used to ensure that the developed four- and nine-node elements pass the patch test and show no signs of shear locking and spurious zero energy modes in the present finite element formulations. Parametric studies are carried out to study the behavior of length to thickness ratios, boundary conditions, fiber orientations on vibration, and buckling of damped composite sandwich plates.
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Published date: 2005
Keywords:
stability, vibration, composite sandwich plates, higher-order shear deformation theory, finite element method, assumed strain concept
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Local EPrints ID: 23786
URI: http://eprints.soton.ac.uk/id/eprint/23786
ISSN: 1530-7972
PURE UUID: 09e0c0e4-3082-4013-b03f-a0d36d47900d
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Date deposited: 21 Mar 2006
Last modified: 15 Mar 2024 06:49
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Author:
A.K. Nayak
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