Thermo-elastic damped nonlinear dynamic response of the initially stressed hybrid GPL/CNT/fiber/polymer composite toroidal shells surrounded by elastic foundation

Mirfatah, Sayed Mohamad; Tayebikhorami, Saman; Shahmohammadi, Mohammad Amin; Salehipour, Hamzeh; Cívalek, Ömer

doi:10.1016/j.compstruct.2021.115047

Cited by 20 publications

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“…in which z k and z k + 1 denote the z coordinate of the lower and upper surfaces of k th layer. By using the proposed local coordinate, the distribution functions for nanocomposites in the face-sheets and porosity in the metal-foam core can be defined as 13 :…”

Section: Materials Characterization Of Cnts Gnps and Metal-foamsmentioning

confidence: 99%

“…In order to improve the capability of the thin-walled structures, using a novel approach, some researches employed nanocomposites and traditional fibers together for reinforcing the thin-walled composites. For example, the studies in Salehipour et al, 11 Shahmohammadi et al, 12 Mirfatah et al, 13 Emadi et al, 14 Badarloo et al, 15 and Kolahchi et al 16 focused on employing the hybrid composites to improve the static and dynamic behavior of shells and plates in which the composite is made of the combination of carbon fibers and CNT/GNP-reinforced resin. It is notable that the application of nano-materials is not only for mechanical aspects.…”

Section: Introductionmentioning

confidence: 99%

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An analytical closed-form solution for free vibration and stability analysis of curved sandwich panels made of porous metal-foam core and nanocomposite reinforced face-sheets

Badarloo,

Salehipour

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper aims to obtain an analytical solution for free vibration and stability analysis of shallow curved sandwich panels made of a porous metal-foam core and nanocomposites reinforced sheets resting on a Winkler-Pasternak elastic foundation. In this regard, two nanocomposites, carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) are considered for reinforcing the face-sheets. The governing equations are developed by considering the transversal shear strains based on the first-order shear deformation theory (FSDT). The obtained system of differential equations representing the dynamic equilibrium and compatibility of the proposed curved sandwich panels are solved analytically, using the principal of Galerkin method. In order to examine the results of developed formulation, some benchmark examples are adopted from the existing literature and the obtained results corresponding to the considered examples are compared with those are presented in the references. Using the achieved numerical results in the framework of a comprehensive parametric study, the effects of various material and geometrical factors and also various boundary conditions on the natural frequencies and buckling loads of the proposed sandwich panels are assessed. By performing the extensive parametric study it was observed that several results corresponding to the free vibration and stability of the proposed sandwich panels can be achieved by the present method without spending much time for computations. On the contrary, in order to achieve the similar results using the numerical methods, a time-consuming process is required which can justify the novelty of the present work.

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