Analysis of edge delaminations in laminates through combined use of quasi-three-dimensional, eight-noded, two-noded and transition elements.

Shah, CG and Krishnamurthy, AV (1991) Analysis of edge delaminations in laminates through combined use of quasi-three-dimensional, eight-noded, two-noded and transition elements. Computers and Structures, 39 (3-4). pp. 231-242.

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Abstract

The use of appropriate finite elements in different regions of a stressed solid can be expected to be economical in computing its stress response. This concept is exploited here in studying stresses near free edges in laminated coupons. The well known free edge problem of [Oj90Lsymmetric laminate is considered to illustrate the application of the concept. The laminate is modelled as a combination of three13; distinct regions. Quasi-three-dimensional eight-noded quadrilateral isoparametric elements (Q3D8) are used at and near the free edge of the laminate and two-noded line elements (Q3D2) are used in the region away from the free edge. A transition element (Q3DT) provides a smooth inter- phase zone between the two regions. Significant reduction in the problem size and hence in the computational time and cost have been achieved at almost no loss of accuracy.

Item Type:	Article
Additional Information:	Copyright for this article belongs to Elsevier Science Ltd.
Uncontrolled Keywords:	Edge deliminations;Quasi-three-dimentional;Eight-noded;Two- noded;Transition elements
Subjects:	ENGINEERING > Structural Mechanics AERONAUTICS > Aeronautics (General)
Depositing User:	M/S ICAST NAL
Date Deposited:	06 Oct 2006
Last Modified:	07 May 2012 05:19
URI:	http://nal-ir.nal.res.in/id/eprint/2886

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