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Development of a New Finite Element for the Analysis of Sandwich Beams with Soft Core

Sudhakar, V and Vijayaraju, K and Gopalakrishnan, S (2010) Development of a New Finite Element for the Analysis of Sandwich Beams with Soft Core. In: Journal of Sandwich Structures and Materials, 12 (6). pp. 649-683.

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Official URL: http://jsm.sagepub.com/content/12/6/649.abstract

Abstract

A new super convergent sandwich beam finite element formulation is presented in this article. This element is a two-nodded, six degrees of freedom (dof) per node (3 dof u(0), w, phi for top and bottom face sheets each), which assumes that all the axial and flexural loads are taken by face sheets, while the core takes only the shear loads. The beam element is formulated based on first-order shear deformation theory for the face sheets and the core displacements are assumed to vary linearly across the thickness. A number of numerical experiments involving static, free vibration, and wave propagation analysis examples are solved with an aim to show the super convergent property of the formulated element. The examples presented in this article consider both metallic and composite face sheets. The formulated element is verified in most cases with the results available in the published literature.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Sage Publications.
Keywords: sandwich beams; face sheets; core; governing equations; finite element method; super convergence; shear locking; static analysis; free vibration; wave propagation; composite or metallic face sheets
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 21 Dec 2010 09:19
Last Modified: 21 Dec 2010 09:19
URI: http://eprints.iisc.ernet.in/id/eprint/34560

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