Elastic buckling response of rectangular GLARE fiber-metal laminates subjected to shearing stresses

In this article, the elastic buckling response of rectangular GLARE fiber-metal laminates with three different support types subjected to shearing stresses is investigated using the finite element method and eigenvalue buckling analysis. Using validated FEM models, the buckling coefficient-aspect ratio diagrams of eight GLARE grades are obtained and studied along with the diagrams of three UD glass-epoxy composites and monolithic 2024-T3 aluminum. It is found that the critical average buckling stress and the buckling load of the materials increases for increasing metal volume fraction. The effect of the fiber-volume fraction on the shear buckling strength of simply supported and clamped fiber-metal laminates is also studied. It is found that the variation of the fiber-volume fraction has a small influence on the behavior of the buckling coefficient-aspect ratio diagrams of two specific GLARE grades. Furthermore, an approximate method is proposed in order to estimate the new shear buckling strength of a GLARE plate when the fiber-volume fraction changes. (C) 2019 Elsevier Masson SAS. All rights reserved.