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Large deformation finite element analysis of laminated circular composite plates

Sridhar, C and Rao, KP (1995) Large deformation finite element analysis of laminated circular composite plates. In: Computers & Structures, 54 (1). pp. 59-64.

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Official URL: http://dx.doi.org/10.1016/0045-7949(94)00300-R


A 48 d.o.f., four-noded quadrilateral laminated composite shell finite element is particularised to a sector finite element and is used for the large deformation analysis of circular composite laminated plates. The strain-displacement relationships for the sector element are obtained by reducing those of the quadrilateral shell finite element by substituting proper values for the geometric parameters. Subsequently, the linear and tangent stiffness matrices are formulated using conventional methods. The Newton-Raphson method is employed as the nonlinear solution technique. The computer code developed is validated by solving an isotropic case for which results are available in the literature. The method is then applied to solve problems of cylindrically orthotropic circular plates. Some of the results of cylindrically orthotropic case are compared with those available in the literature. Subsequently, application is made to the case of laminated composite circular plates having different lay-up schemes. The computer code can handle symmetric/unsymmetric lay-up schemes. The large displacement analysis is useful in estimating the damage in composite plates caused by low-velocity impact.

Item Type: Journal Article
Publication: Computers & Structures
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 31 May 2011 06:33
Last Modified: 31 May 2011 06:33
URI: http://eprints.iisc.ac.in/id/eprint/38063

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