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A consistent refined theory for flexure of a symmetric laminate

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Title A consistent refined theory for flexure of a symmetric laminate
 
Creator PANDYA, BN
KANT, TARUN
 
Subject laminates
bending
elasticity
finite element analysis
stress-strain relations
 
Description Any two-dimensional plate theory is an approximation of the real three-dimen-

sional elasticity problem. The classical laminated plate theory is based on

the Kirchhoff hypothesis and ignores the effects of transverse shear deforma-

tion, normal stress, normal strain and nonlinear in-plane normal strain dis-

tribution through the plate thickness [ 1,2]. Two types of composite plates

are generally identified in practice: (i) 'fibre reinforced laminates' in

which layers of composite materials with high ratios of Young's-to-shear

modulii are bonded together and (2) 'sandwiches' in which layers of isotropic

materials with some layers having significantly lower elastic modulii than

others, are bonded together. The effects of shear deformation are signific-

ant in these situations and thus the classical theory is inadequate. Exact

elasticity solutions for flexure of some standard composite and sandwich

plate problems have been obtained by Pagano [ 3] and Pagano and Hatfield [4].

Whitney [5] and Mau [6] have presented first-order laminate theories in which

transverse shear strain is assumed constant through the thickness. This re-

quired, however, use of a transverse shear correction factor which generally

varied with the lamination scheme.
 
Publisher Elsevier
 
Date 2009-03-18T09:11:46Z
2011-11-25T19:23:47Z
2011-12-26T13:07:14Z
2011-12-27T05:55:22Z
2009-03-18T09:11:46Z
2011-11-25T19:23:47Z
2011-12-26T13:07:14Z
2011-12-27T05:55:22Z
1987
 
Type Article
 
Identifier Mechanics Research Communications 14( 2), 107-113
0093-6413
http://dx.doi.org/10.1016/0093-6413(87)90026-7
http://hdl.handle.net/10054/975
http://dspace.library.iitb.ac.in/xmlui/handle/10054/975
 
Language en