Abstract
Laminated composite materials are extensively utilised in aerospace, aviation and automobile industries because of their high strength and low weight. When laminates are composed of layers with different orientations, classical lamination theory implies boundary tractions on free edges. Edge delamination in laminated composites has become significant in structural reliability. Due to more inter-laminar shear stresses nearer to the free edges of the laminates, more failure modes are developed in the laminates. Because of the complex fibre/matrix micro structure of laminated composite materials, an evaluation of these stresses becomes very important in composite materials design. Normally free edge inter-laminar stresses arise from the mismatch of elastic properties between two layers. Therefore it is necessary to predict the inter-laminar stresses of laminated composite plates. In this study, the free edge inter-laminar stresses of laminated composite materials are predicted numerically. Numerical prediction of inter-laminar stresses of non-hybrid and hybrid laminated composite plates are predicted. In hybrid category, carbon fibres and glass fibres are combined together and analysed. Numerical analysis of laminates is performed in ANSYS. The inter-laminar shear forces and stress distribution are plotted along thickness.
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