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Steel and Composite Structures Volume 46, Number 5, March10 2023 , pages 611-619 DOI: https://doi.org/10.12989/scs.2023.46.5.611 |
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Flutter behavior of graded graphene platelet reinforced cylindrical shells with porosities under supersonic airflow |
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Mohammad Mashhour, Mohammad Reza Barati and Hossein Shahverdi
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| Abstract | ||
| In the present work, the flutter characteristics of porous nanocomposite cylindrical shells, reinforced with graphene platelets (GPLs) in supersonic airflow, have been investigated. Different distributions for GPLs and porosities have been considered which are named uniform and non-uniform distributions thorough the shell's thickness. The effective material properties have been determined via Halpin-Tsai micromechanical model. The cylindrical shell formulation considering supersonic airflow has been developed in the context of first-order shell and first-order piston theories. The governing equations have been solved using Galerkin's method to find the frequency-pressure plots. It will be seen that the flutter points of the shell are dependent on the both amount and distribution of porosities and GPLs and also shell geometrical parameters. | ||
| Key Words | ||
| flutter; graphene platelet; nanocomposite shell; porosities; porous material | ||
| Address | ||
| Mohammad Mashhour, Mohammad Reza Barati and Hossein Shahverdi:Aerospace Engineering Department and Center of Excellence in Computational Aerospace, Amirkabir University of Technology, Tehran, 15875-4413, Iran | ||