DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/10546

Title: Application of a three-dimensional mixed finite element model to the flexure of sandwich plate
Authors: RAMTEKKAR, GS
DESAI, YM
SHAH, AH
Keywords: laminated composite plates
multilayered plates
stresses
Issue Date: 2003
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: COMPUTERS & STRUCTURES, 81(22-23), 2183-2198
Abstract: The bending analysis of sandwich plates consisting of very stiff face sheets and a comparatively flexible core material offers challenge due to large variation in the magnitude of stress and strain components in the face and in the core regions of the plate. Similarly, the displacement fields do vary in zigzag manner at the layer interface of stiff face sheet and the soft core, thereby making the transverse strains highly discontinuous at such layer interfaces. All these behavioural aspects indicate that only an individual layerwise model can appropriately analyze sandwich plates. A layerwise (three-dimensional), mixed, 18-node finite element (FE) model developed by Ramtekkar et al. [Mech. Adv. Mater. Struct. 9 (2002) 133] has been employed for the accurate evaluation of transverse stresses in sandwich laminates. The FE model consists of six degrees-of-freedom (three displacement components and three transverse stress components tau(xz), tau(yz), sigma(z), where z is the thickness direction) per node which ensures the through thickness continuity of transverse stress and displacement fields. Results obtained by using the FE model have shown excellent agreement with the available elasticity solutions for sandwich plates. Additional results on the variation of transverse strains have also been presented to highlight the magnitude of discontinuity in these quantities due to difference in properties of the face and the core materials of sandwich plates. (C) 2003 Elsevier Ltd.
URI: http://dx.doi.org/10.1016/S0045-7949(03)00289-X
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10546
http://hdl.handle.net/10054/10546
ISSN: 0045-7949
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback