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Finite element analysis of free vibration of the delaminated composite plate with variable kinematic multilayered plate elements

Kumar, Keshava S and Cinefra, M and Carrera, E and Ganguli, Ranjan and Harursampath, Dineshkumar (2014) Finite element analysis of free vibration of the delaminated composite plate with variable kinematic multilayered plate elements. In: COMPOSITES PART B-ENGINEERING, 66 . pp. 453-465.

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Official URL: http://dx.doi.org/ 10.1016/j.compositesb.2014.05.0...

Abstract

Composite laminates are prone to delamination. Implementation of delamination in the Carrera Unified Formulation frame work using nine noded quadrilateral MITC9 element is discussed in this article. MITC9 element is devoid of shear locking and membrane locking. Delaminated as well as healthy structure is analyzed for free mode vibration. The results from the present work are compared with the available experimental or/and research article or/and the three dimensional finite element simulations. The effect of different kinds and different percentages of area of delamination on the first three natural frequencies of the structure is discussed. The presence of open-mode delamination mode shape for large delaminations within the first three natural frequencies is discussed. Also, the switching of places between the second bending mode, with that of the first torsional mode frequency is discussed. Results obtained from different ordered theories are compared in the presence of delamination. Advantage of layerwise theories as compared to equivalent single layer theories for very large delaminations is stated. The effect of different kinds of delamination and their effect on the second bending and first torsional mode shape is discussed. (C) 2014 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
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Additional Information: Copy right for this article belongs to the ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Keywords: Layered structures; Delamination; Finite Element Analysis (FEA); Plate
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 12 Nov 2014 04:53
Last Modified: 12 Nov 2014 04:53
URI: http://eprints.iisc.ernet.in/id/eprint/50215

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