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2020 | OriginalPaper | Chapter

The Rule of Mixtures on the Elastic Buckling Response of Rectangular GLARE FML Plates Under Shear Stresses

Authors : Costas D. Kalfountzos, George S. E. Bikakis, Efstathios E. Theotokoglou

Published in: Proceedings of the Third International Conference on Theoretical, Applied and Experimental Mechanics

Publisher: Springer International Publishing

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Abstract

Fiber Metal Laminates (FMLs) are hybrid composite materials consisting of alternating metal layers bonded to fiber-reinforced prepreg layers. ARALL, CARALL and GLARE belong to this new family of materials. GLARE is the most successful FML up to now and is currently being used for the construction of primary aerospace structures. In this study, the elastic buckling response of rectangular GLARE FMLs subjected to shearing stresses is investigated using the finite element method and eigenvalue buckling analysis. Simply supported, clamped and mixed boundary conditions are considered. Using validated FEM models, the buckling coefficient-aspect ratio diagrams of seven GLARE grades are obtained along with the diagrams of three UD glass-epoxy composites and monolithic 2024-T3 aluminum. The rule of mixtures is evaluated and found to be a simple method to estimate approximately the elastic buckling stress of the GLARE plates. An approximate formula is derived for the estimation of the critical buckling coefficient of the GLARE plates using the buckling coefficients of their constituents.

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Title: The Rule of Mixtures on the Elastic Buckling Response of Rectangular GLARE FML Plates Under Shear Stresses
Authors: Costas D. Kalfountzos
George S. E. Bikakis
Efstathios E. Theotokoglou
Publisher: Springer International Publishing
Book: Proceedings of the Third International Conference on Theoretical, Applied and Experimental Mechanics
Print ISBN: 978-3-030-47882-7

Electronic ISBN: 978-3-030-47883-4

Copyright Year: 2020
DOI: https://doi.org/10.1007/978-3-030-47883-4_4

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