Numerical Investigations of Stresses and Damage Distributions on the Layers of a Sandwich Beam with Composite Laminated Faces Subjected to Bending

Iuliana Dupir (Hudisteanu), Nicolae Taranu, Cristina Vladoiu, Dragos Ungureanu


The sandwich elements are multi-layered structures made of two strong and stiff thin exterior faces, bonded by a lightweight thick core, such that the structural properties of the entire assembly are superior to those of the separate components.
The composite laminates are build up by stacking two or more unidirectional fibre reinforced composite laminas, with different or same fibre orientation angles, thicknesses and materials constituents.
The design flexibility of composite structures is a great challenge since the advantage of orienting the composite laminas in the needed directions leads to improved structural properties of the whole assembly.
The paper presents the flexural response of a sandwich beam with exterior layers made of laminated composites with different fibre orientations. The results are presented in terms of distribution of stresses on the layers of the composite sandwich beam. The failure and the damage occurrence on the plies of the laminated facings are investigated according to the maximum strain failure criterion and to the modified Puck failure criterion.


sandwich beam, composite laminate facings, stresses distributions, fibre orientations

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Daniel, I.M., Ishai, O., Engineering mechanics of composite materials. Second Edition, Oxford University Press, 2006.

Vasiliev. V.V., Morozov E., Advanced Mechanics of Composite Materials and Structural Elements, Third Edition, Elsevier, 2013.

Hudișteanu, I., Țăranu, N., Ențuc, I.-S., Maxineasa, S.G., Comparative analysis of the engineering constants of composite laminates, Rev Rom Mat, 46(2), 232-241, 2016.

Ţăranu, N., Elemente portante din materiale plastice, PhD thesis, Institutul Politehnic, Iaşi, 1978.

Zenkert, D., An Introduction to Sandwich Construction, Chameleon Press Ltd., London, United Kingdom, 1995.

Davies, J.M., Lightweight Sandwich Construction, Blackwell Science, London, 2001.

Allen, H., Analysis and design of structural sandwich panels, Pergamon Press, Oxford, 1969.

Marta C. L. Optimizarea multicriterială a elementelor de închidere pentru construcţii industriale, PhD thesis, Iaşi, 2007.

Dupir (Hudișteanu), I., Țăranu, N., Lupășteanu,V., Ungureanu, D., Comparative analysis of first ply failure and progressive failure for symmetric composite laminates, XVI International Scientific Conference VSU’2016, II 134-139, 2016.

ASTM C393/C393M-16, Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure, ASTM International, West Conshohocken, PA, 2016 .

Hudișteanu, I., Țăranu, N., Isopescu, D.N., Bejan, L., Axinte, A., Ungureanu, D., Improving the mechanical properties of composite laminates through the suitable selection of the corresponding materials and configurations, Rev Rom Mat, 47(2), accepted for publication, 2017.

Barbero, E.J., Introduction to Composite Materials Design. Second edition, CRC Press, Taylor and Francis Group, 2011.

Doughett, A., Asnarez, P., Composite Laminates: Properties, Performance and Applications, Materials Science and Technologies Series, Nova Science Publishers, Inc., New York, 2010.

Țăranu, N., Bejan, L., Cozmanciuc, R., Hohan, R., Materiale și elemente compozite I. Prelegeri și aplicații, Ed. Politehnium, Iași, 2013.

ANSYS® Workbench & ANSYS® Composite Prep/Post, User manual, ANSYS, Inc.


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