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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6050

Title: Dynamic analysis of laminated composite plates using a layer-wise mixed finite element model
Authors: DESAI, YM
RAMTEKKAR, GS
SHAH, AH
Keywords: sandwich plates
bidirectional composites
multilayered plates
rectangular-plates
free-vibrations
stability
Issue Date: 2003
Publisher: ELSEVIER SCI LTD
Citation: COMPOSITE STRUCTURES, 59(2), 237-249
Abstract: This paper deals with an accurate, three-dimensional, higher order, mixed finite element (FE) modeling for the free vibration analysis of multi-layered thick composite plates. An 18-node, three-dimensional mixed FE model has been developed by using Hamilton's energy principle. Continuity of the transverse stress and the displacement fields has been enforced through the thickness of laminated composite plate. Further, in addition to the displacement components, the transverse stress components (sigma(z), tau(xz), and tau(yz), where z is the thickness direction) have been invoked as the nodal degrees-of-freedom by applying elastic equations between stress and displacement fields. Thus, the present FE model has a novel feature of maintaining the fundamental elastic relationship throughout an elastic continuum. Natural frequencies of laminated composite plates obtained through the present formulation have been shown to be in good agreement with the available elasticity and closed form solutions. Stress mode shapes have been plotted for the fundamental natural vibration of plates with various lamination schemes. Strain variations through the thickness of laminated plates have also been presented graphically to show the magnitude of discontinuity in the variation of transverse strains at the layer interfaces. (C) 2002 . .
URI: http://dx.doi.org/10.1016/S0263-8223(02)00121-6
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6050
http://hdl.handle.net/10054/6050
ISSN: 0263-8223
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