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Optimization of graphene/fibre reinforced cantilever skew laminates for maximum fundamental frequency via non-uniform distribution of reinforcements

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Jeawon, Y., Drosopoulos, Georgios ORCID: 0000-0002-4252-6321, Foutsitzi, G., Stravroulakis, G. E. and Adali, S. (2023) Optimization of graphene/fibre reinforced cantilever skew laminates for maximum fundamental frequency via non-uniform distribution of reinforcements. Thin-Walled Structures, 189 . ISSN 0263-8231

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Official URL: https://doi.org/10.1016/j.tws.2023.110903

Abstract

Three-phase graphene/fibre-reinforced cantilever skew laminates are optimized with the design objective of maximizing the fundamental frequency. Four optimal design problems are formulated involving one, two, three, and four design variables: graphene content, fibre content, layer thicknesses, and the fibre orientations. Optimization is implemented using a Sequential Quadratic Programming optimization algorithm within finite element analysis. It is observed that optimizing the graphene and fibre contents across the thickness leads to increased fundamental frequency. A trend is observed for the frequency of skew laminates to increase but for their design efficiency to decrease compared to rectangular laminates.

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