Wave frequency responses estimate of the nanocomposite linked hemispherical-conical shell underwater-like bodies with the impacts of two types of graphene-based nanofillers

Sobhani, Emad; Masoodi, Amir R.; Ahmadi-Pari, Amir Reza

doi:10.1016/j.oceaneng.2022.112329

Cited by 24 publications

(2 citation statements)

References 75 publications

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“…Finally, GDQM was applied for solving the governing equations of the structure. Based on the first-order shear deformation hypothesis and GDQM, wave frequency responses of the nanocomposite-linked hemispherical-conicalshell underwater-like bodies with the impacts of two types of graphene-based nanofillers were reported by Sobhani, Masoodi and Ahmad Pari [40]. Sobhani, Masoodi and Ahmad Pari [41] employed FDST as the theory and GDQM as a solution to evaluate the circumferential vibration analysis of nano-porous-sandwich assembled spherical-cylindrical-conical shells under elastic boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Free Vibration Analyses of Stiffened Functionally Graded Graphene-Reinforced Composite Multilayer Cylindrical Panel

Zhou,

Zhang,

Nyasha Chirukam

et al. 2023

Mathematics

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In this paper, the free vibration response of a stiffened functionally graded graphene nanoplatelet (GPL)-reinforced composite multilayer cylindrical shell panel is studied for the first time. The shell is stiffened by both stringers and rings. Additionally, the effect of reinforcing the shell panel, ring and stinger with GPLs is independently studied. Halpin–Tsai relations are employed to evaluate the mechanical properties of the shell panel, rings and stringers. The first-order shear deformation shell theory, accompanied by the Lekhnitsky smeared stiffener model, using the numerical finite element method and Hamilton principle, is employed to develop the governing motion equations of the shell panel. Four different types of GPL patterns, including FG-A, FG-X, FG-O and UD, are assumed across the thickness of the shell panel, rings and stringers. The effects of different factors, including various weight fractions and patterns of GPLs nanofillers, the geometry of the shell panel and stiffeners and two displacement boundary conditions, on the natural frequencies of the shell panel, have been studied.

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Section: Introductionmentioning

confidence: 99%

Free Vibration Analyses of Stiffened Functionally Graded Graphene-Reinforced Composite Multilayer Cylindrical Panel

Zhou,

Zhang,

Nyasha Chirukam

et al. 2023

Mathematics

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“…Liu et al proposed an approximate analytical model for buckling analysis of common spherical-cylindrical-spherical composite structures by using the generalized Galerkin method [21]. Sobhani et al investigated the vibration of porous nanoenriched polymer composite coupled spheroidal-cylindrical shells, the wave frequency responses of the nanocomposite linked hemispherical-conical shell, the Circumferential vibration analysis of nano-porous sandwich assembled spherical-cylindrical-conical shells, and the Free vibration of porous graphene oxide powder nano-composite assembled paraboloid-cylindrical shells [22][23][24][25]. Rezaiee and Masoodi analyzed the buckling of plates and shell structures by an efficient triangular shell element which had six nodes with thirty degrees of freedom [26].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Buckling and Post-Buckling Analyses of Sphere-Segmented Toroidal Shell Subject to External Pressure

Zhang

Wang

2022

Metals

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This study determined the buckling characteristics of sphere-segmented toroidal shells subjected to external pressure. The proposed toroidal vessel comprises six spheres and six rings. Two laboratory models with the same nominal dimensions were manufactured, measured, tested, and evaluated. To investigate whether sphere-segmented toroidal shells are imperfection-sensitive structures with closely spaced eigenvalues, the subspace algorithm was applied to evaluate the first 50 eigenmodes, and the modified Riks algorithm was used to obtain post-buckling characteristics. The results indicated that the deviation between the results of the experimental and numerical analyses was within a reasonable range. The proposed sphere-segmented toroidal shells were highly imperfection-sensitive structures with closely spaced eigenvalues. Subsequently, imperfection sensitivity analysis confirmed this conclusion. In numerical analyses, the first eigenmode could be considered as the worst eigenmode of sphere-segmented toroidal shells. The trend of the equilibrium path of sphere-segmented toroidal shells was consistent with spherical shells, revealing instability. In addition, ellipticity and completeness exerted a negligible effect on the buckling load of sphere-segmented toroidal shells.

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On the Advances of Computational Nonclassical Continuum Theories of Elasticity for Bending Analyses of Small-Sized Plate-Based Structures: A Review

Nuhu

Safaei

2023

Arch Computat Methods Eng

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Wave frequency responses estimate of the nanocomposite linked hemispherical-conical shell underwater-like bodies with the impacts of two types of graphene-based nanofillers

Cited by 24 publications

References 75 publications

Free Vibration Analyses of Stiffened Functionally Graded Graphene-Reinforced Composite Multilayer Cylindrical Panel

Free Vibration Analyses of Stiffened Functionally Graded Graphene-Reinforced Composite Multilayer Cylindrical Panel

Numerical and Experimental Buckling and Post-Buckling Analyses of Sphere-Segmented Toroidal Shell Subject to External Pressure

On the Advances of Computational Nonclassical Continuum Theories of Elasticity for Bending Analyses of Small-Sized Plate-Based Structures: A Review

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