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Use of polymer composites in manufacturing hydrogen storage tanks, allows minimizing the weight, improving the aesthetic and also increasing the pressure vessel mechanical, impact and corrosion behavior. In this paper, cylindrical composite pressure vessels constituting of metallic internal liner and filament wound composite material as the outer shell were investigated. The Finite Element Method is used to predict the mechanical behavior of pressure vessels. The influence of metallic and composite layers thicknesses, number of composite layers and winding angle of filament-wound composite on the designed tank were investigated. A parametric study was performed to find out the optimal tank design.

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