The anisotropic nature of the laminate composites creates a unique opportunity and also a great challenge for tailoring its properties according to the design requirements. In this work, investigating the strength of laminate composite, a nonlinear finite element analysis is used to simulate the stress concentration caused by a through elliptical hole with various shapes and size within a metallic material and a fiber-reinforced laminate with different orientations subjected to the uniaxial tensile stress. This evaluation provides a clear indication and a key step in understanding failures initiated by stress concentration which may lead to the growth of a crack. Comparison between the effects of the hole both on a metallic material and on a fiber-reinforced laminate exposes a totally different situation. In general, the stress concentration depends not only on the material properties, the layer stacking order, and the orientations, but also on the geometry of the hole.

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