Higher-order theories for symmetric and unsymmetric fiber reinforced composite beams with C0 finite elements

Kant, T. ; Manjunatha, B. S. (1990) Higher-order theories for symmetric and unsymmetric fiber reinforced composite beams with C0 finite elements Finite Elements in Analysis and Design, 6 (4). pp. 303-320. ISSN 0168-874X

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/016887...

Related URL: http://dx.doi.org/10.1016/0168-874X(90)90022-7

Abstract

A simple C0 isoparametric finite element formulation based on a set of higher-order displacement models for the analysis of symmetric and asymmetric multilayered composite and sandwich beams subjected to sinusoidal loading is presented. These theories do not require the usual shear correction coefficients which are generally associated with the Timoshenko theory. The four-noded Lagrangian cubic element with kinematic models having four, five and six degrees of freedom per node is used. A computer algorithm is developed which incorporates realistic prediction of transverse interlaminar stresses from equilibrium equations. By comparing the results obtained with the elasticity solution and the CPT (classical laminated plate theory) it is shown that the present higher-order theories give a much better approximation to the behaviour of laminated composite beams, both thick and thin. In addition numerical results for unsymmetric sandwich beams are presented which may serve as benchmark for future investigations.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:15985
Deposited On:16 Nov 2010 13:36
Last Modified:17 May 2016 00:49

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