Coupled five-parameter dynamics of Mindlin and third-order shear deformable FG graphene-platelets reinforced viscoelastic plates with geometric and material imperfections

Engineering Structures, Год журнала: 2023, Номер 297, С. 116944 - 116944

Опубликована: Окт. 14, 2023

The present work investigates the coupled five-parameter dynamics, in particular, structural resonance frequency, of functionally graded (FG) graphene-platelets reinforced viscoelastic plates presence geometric and material (porosity) imperfections, based on Mindlin theory third-order shear deformation plate (TSDPT). Various imperfections are often found structures as a result challenges manufacturing operations over time. Geometric imperfection is considered FG structure by modelling an initial curvature out-of-plane direction. Material form closed-cell voids, formulated uniform non-uniform porosity distributions. Uniform thickness-wise gradation effects accounted for determination effective properties using two-dimensional Halpin-Tsai micromechanics model, conjunction with rule mixtures. Viscoelasticity imperfect modelled employing Kelvin-Voigt model to consider energy dissipation. Using TSDPT, five equations motion, which through parameters u, v, w, ϕ1, ϕ2, derived Hamilton's variational principle. An assumed mode method then employed obtain real imaginary components frequencies. combined influences different examined. results obtained offer comprehensive understanding how graphene-platelets, porosity, thickness, imperfection, utilisation two theories collectively influence dynamics imperfections. It was that difference frequency resulted from use most dominant GX and/or PX porous plates, alter plate's sensitivity towards imperfection.

Язык: Английский

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Bending, free vibration and buckling finite element analysis of porous functionally graded plates with various porosity distributions using an improved FSDT

Mechanics Based Design of Structures and Machines, Год журнала: 2024, Номер unknown, С. 1 - 45

Опубликована: Июнь 20, 2024

Functionally graded materials (FGMs) are advanced composite with spatially varying properties, and their porosity distribution further enhances complexity. The pattern of within a porous material plays crucial role in determining the mechanical response these structures. Therefore, main objective this study is to analyze bending, free vibration, buckling characteristics FG plates by considering different distributions effects on overall behavior. To achieve goal, new finite element model developed framework an improved first-order shear deformation theory (IFSDT). In contrast conventional Mindlin–Reissner theory, present IFSDT incorporates mathematical formulation provides more realistic parabolic depiction strain throughout plate's thickness without using any correction factors. study, five types functions considered for analysis. FGM plate change gradually direction based power-law function. governing equations derived here Hamilton's principle, method employed numerical Comparative analyses previously published literature underscore precision simplicity our model. Moreover, various loads, parameters, index, side-to-thickness ratio, aspect boundary conditions deflections, natural frequencies, critical loads thoroughly analyzed detail. Finally, findings research contribute understanding behavior FGMs pave way designing optimizing novel functionally

Язык: Английский

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Numerical investigation on buckling of two-directional porous functionally graded beam using higher order shear deformation theory

International Journal on Interactive Design and Manufacturing (IJIDeM), Год журнала: 2023, Номер 18(5), С. 2805 - 2818

Опубликована: Май 3, 2023

Язык: Английский

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Static and dynamic response of pyramidal lattice sandwich plate with composite face sheets reinforced by graphene platelets

Engineering Structures, Год журнала: 2024, Номер 310, С. 118122 - 118122

Опубликована: Май 9, 2024

Язык: Английский

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On thermo-mechanical buckling of porous bi-directional functionally graded plates using isogeometric analysis

Aerospace Science and Technology, Год журнала: 2024, Номер 155, С. 109520 - 109520

Опубликована: Авг. 29, 2024

Язык: Английский

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Large deflection response of functionally graded porous structures considering geometrical nonlinearity using an improved FSDT

Mechanics Based Design of Structures and Machines, Год журнала: 2024, Номер unknown, С. 1 - 24

Опубликована: Янв. 23, 2024

This study's objective is to propose a full 3D finite element modeling for examining the geometrically nonlinear (NL) response of functionally graded (FG) porous materials with plates, ring, and cylindrical shapes. An improved first-order shear deformation theory (IFSDT) utilized in order develop solid-shell element. The governing equations are developed way that offers parabolic distribution transverse strains through FG shell thickness zero condition stresses on top bottom surfaces. given IFSDT has ability model any kind structures incorporates material law. In this study, two types porosity functions considered. effectiveness present demonstrated linear (L) NL numerical examples. effect distribution, coefficient, power-law index, geometrical design parameters, boundary conditions shells evaluated.

Язык: Английский

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Buckling analysis of functionally graded sandwich thin plates using a meshfree Hermite Radial Point Interpolation Method

Engineering With Computers, Год журнала: 2024, Номер unknown

Опубликована: Авг. 2, 2024

Язык: Английский

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Nonlinear analysis of buckling and post-buckling behavior of porous FGM sandwich plates using a high-order continuity finite element approach

Archive of Applied Mechanics, Год журнала: 2025, Номер 95(2)

Опубликована: Янв. 27, 2025

Язык: Английский

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A nonlinear thermo-mechanical coupling model for simulating functionally graded nose cones under aerodynamic environment

Composite Structures, Год журнала: 2025, Номер unknown, С. 119108 - 119108

Опубликована: Март 1, 2025

Язык: Английский

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Thermo-mechanical free vibration analysis of porous solar FGM plates resting on Kerr’s foundation using a new logarithmic-hyperbolic shear deformation theory

Archive of Applied Mechanics, Год журнала: 2025, Номер 95(4)

Опубликована: Апрель 1, 2025

Язык: Английский

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