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The aim of this research is to design a telescopic hydraulic cylinder, normally used in industrial filed, made of different materials and in particular composite material instead of classical structural steel. Specifically it will refer to the application of this actuator on a dump truck and designated to the transport of soil material, starting from hard load conditions and from the minimum incline to guarantee the complete emptying of the dump truck, the geometry of the cylinder has been defined. The peculiarity of this research is about the materials employed for the design, and the future fulfilment of this component. The work deal with the custom of 4 different materials, or rather: 2 type of steel (structural: S235 JR and stainless AISI 304), aluminum alloy 7075-T6 (Ergal) and a composite material made of epoxy resin and carbon fibers. The elaboration of the new solutions presented, has been realized evaluating the barrel of the cylinder as a container in a pressure vessel with thin walled, whereas the rod as a beam prone to buckling. Is possible to observe how the study has been faced also with the aid of analysis about finite elements, as well as to verify the design of the component, also to prove others phenomena, as the instability for peak load. Moreover is possible to highlight that the adopted theory for the planning of composite barrel, despite load conditions are the same, they differs from the theory used for aluminum and steel because of his anisotropic behavior. Given the particular nature of the composite material, the arguments related with technology are set out, about technology production through filament winding and the assembly of the components of the telescopic cylinder. Thanks to the achieved results, is possible to observe how the use of the composite material, for the realization of that component, can be extremely favorable for the weight achieving a reduction of the 96% starting from 5537 N, reaching 196 N.
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- Telescopic Hydraulic Cylinder Made of Composite Material
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