Thermomechanical Nonlinear Vibration of Axially Loaded Functionally Graded Material Cylindrical Panels Including Porosity DOI
Hoang Van Tung,

Nguyen Van Thinh

AIAA Journal, Год журнала: 2024, Номер 63(3), С. 1091 - 1105

Опубликована: Ноя. 13, 2024

For the first time, combined influences of axial compressive load, porosity, geometric imperfection, elastic edge restraint, and elevated temperature on nonlinear free vibration functionally graded material (FGM) cylindrical panels are investigated in this paper. Unlike previous studies, structural model considered paper includes practical situations conditions arising design process application FGM panels. The properties constituents assumed to be temperature-dependent, effective porous determined using a modified rule mixture. Governing equations terms deflection stress function established based first-order shear deformation theory, taking into account von Kármán–Donnell nonlinearity initial imperfection. Analytical solutions satisfy simply supported boundary conditions, Galerkin method is applied derive time differential equation containing both quadratic cubic terms. This numerically integrated employing fourth-order Runge–Kutta scheme determine frequencies vibration. Parametric studies carried out assess numerous effects linear study reveals that natural strongly decreased frequency more significant due loads.

Язык: Английский

Influences of Different Boundary Conditions and Hygro-Thermal Environment on the Free Vibration Responses of FGM Sandwich Plates Resting on Viscoelastic Foundation DOI

Abdeldjebbar Tounsi,

Abdelmoumen Anis Bousahla, Saeed I. Tahir

и другие.

International Journal of Structural Stability and Dynamics, Год журнала: 2023, Номер 24(11)

Опубликована: Авг. 20, 2023

This paper investigates the free vibration of functionally graded material (FGM) sandwich plates supported by different boundary conditions and influenced a three-parameter viscoelastic foundation hygro-thermal changes. Three types FGM are studied discussed, in which layers vary according to power law rule consist ceramic metal materials. An efficient simple four-variable integral higher-order shear deformation theory (HSDT) is employed model analytical solution considered problem. Hamilton principle implemented obtain plates’ governing equations derive eigenvalue equation for study. The verified comparing numerical results with previous studies on exponentially plates. New presented this showing influences conditions, changes, parameters, modes, exponents, geometric dimensions.

Язык: Английский

Процитировано

102
Effect of porosity distribution on flexural and free vibrational behaviors of laminated composite shell using a novel sinusoidal HSDT DOI
Farouk Yahia Addou, Fouad Bourada,

Abdeldjebbar Tounsi

и другие.

Archives of Civil and Mechanical Engineering, Год журнала: 2024, Номер 24(2)

Опубликована: Апрель 7, 2024

Язык: Английский

Процитировано

30
Effect of porosity on the modal response of doubly-curved laminated shell structures made of functionally graded materials employing higher order theories DOI Creative Commons
Francesco Tornabene, Matteo Viscoti, Rossana Dimitri

и другие.

Structures, Год журнала: 2024, Номер 60, С. 105848 - 105848

Опубликована: Янв. 17, 2024

Язык: Английский

Процитировано

15
Multi-Directional Functionally Graded Sandwich Plates: Buckling and Free Vibration Analysis with Refined Plate Models under Various Boundary Conditions DOI Creative Commons
Lazreg Hadji, Vagelis Plevris, Royal Madan

и другие.

Computation, Год журнала: 2024, Номер 12(4), С. 65 - 65

Опубликована: Март 27, 2024

This study conducts buckling and free vibration analyses of multi-directional functionally graded sandwich plates subjected to various boundary conditions. Two scenarios are considered: a (FG) skin with homogeneous hard core, an FG soft core. Utilizing refined plate models, which incorporate parabolic distribution transverse shear stresses while ensuring zero on both the upper lower surfaces, equations motion derived using Hamilton’s principle. Analytical solutions for under diverse conditions developed presented. The obtained results validated against existing literature analyses. composition metal–ceramic-based materials varies longitudinally transversely, following power law. Various types considered, accounting symmetry layer thicknesses. investigation explores influence several parameters behaviors.

Язык: Английский

Процитировано

11
Combined effect of temperature dependent material properties and boundary conditions on non-linear thermal stability of porous FG beams DOI
Abdelaziz Boutrid, Billel Rebai, Belgacem Mamen

и другие.

Acta Mechanica, Год журнала: 2024, Номер 235(5), С. 2867 - 2887

Опубликована: Фев. 18, 2024

Язык: Английский

Процитировано

6
A nonlinear joint model for large-amplitude vibrations of initially curved panels: Reduced-order modelling and experimental validation DOI Creative Commons
Hamed Farokhi, Nidhal Jamia, Hassan Jalali

и другие.

Mechanical Systems and Signal Processing, Год журнала: 2024, Номер 211, С. 111239 - 111239

Опубликована: Фев. 19, 2024

This study conducts an extensive theoretical-experimental investigation into the nonlinear dynamical response of a base-excited initially curved panel clamped at two ends via bolted joints. A new distributed joint stiffness model is proposed capable exhibiting interconnected effects various states contact interface. More specifically, allows control softening behaviour through controlling displacement threshold for micro-slip and stick states, as well rate which region develops. Due to inclined angle clamping supports, slightly in its fastened arrangement. Hence, modelled shallow shell using Donnell's theory, taking account von Kármán strain nonlinearities, while retaining all in-plane out-of-plane displacements. Structural damping considered use Kelvin–Voigt model. Taking work model, partial differential equations governing motions are derived generalised Hamilton's principle, then discretised reduced-order two-dimensional Galerkin modal decomposition approach. For experimental part, nominally identical panels several tests conducted base excitation primary resonance backbone curves obtained directly Phase Lock Loop method. Extensive comparisons between results theoretical predictions both time histories midpoint velocity displacement. It shown that very good agreement with results, being predicting significant variability results.

Язык: Английский

Процитировано

4
Bending and Buckling Analysis of Porous 2D Functionally Graded Beams with Exponential Material Property Variation DOI
Gökhan Adıyaman, Muhittin Turan

Iranian Journal of Science and Technology Transactions of Civil Engineering, Год журнала: 2024, Номер unknown

Опубликована: Июнь 27, 2024

Язык: Английский

Процитировано

4
Porosity Investigations on Dynamic Responses of FG Plates via a Modified Quasi-3D Shear Deformation Theory DOI

Mostefa Rabehi,

Billel Rebai, Mustapha Meradjah

и другие.

Journal of Vibration Engineering & Technologies, Год журнала: 2025, Номер 13(2)

Опубликована: Янв. 22, 2025

Язык: Английский

Процитировано

0
Effect of Orthotropic Variable Foundations and Unconventional Support Conditions on Nonlinear Hygrothermoelectric Vibration of Porous Multidirectional Piezoelectric Functionally Graded Nonuniform Plate DOI Creative Commons
Pawan Kumar, Sontipee Aimmanee, S. P. Harsha

и другие.

International journal of mechanical system dynamics, Год журнала: 2025, Номер unknown

Опубликована: Май 25, 2025

ABSTRACT This article investigates the nonlinear vibration behavior of porous multidirectional piezoelectric functionally graded nonuniform (PFGN) plates resting on orthotropic variable elastic foundations and subjected to hygrothermal loading. The sigmoidal law is employed define gradation properties, incorporating porosity along both axial thickness directions. governing equations for PFGN plate are derived using modified first‐order shear deformation theory (FSDT) with von Kármán strain Hamilton's principle. A higher‐order finite element (FE) approach, combined a Newton‐Raphson method, utilized solve resulting equations. study reveals that significantly influence compared conventional under Additionally, effects various parameters such as ratio, tapered material exponent, boundary conditions, distribution, electrical loading, temperature variation, moisture change comprehensively analyzed. results this have direct applications in energy harvesting structural health monitoring, offering novel approach designing optimizing smart materials engineering systems operating thermoelectrical conditions.

Язык: Английский

Процитировано

0
An investigation on the torsional vibration of a FG strain gradient nanotube DOI
Büşra Uzun, Mustafa Özgür Yaylı, Ömer Cívalek

и другие.

ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Год журнала: 2024, Номер 104(7)

Опубликована: Май 2, 2024

Abstract In this work, an attention is paid to the prediction of torsional vibration frequencies functionally graded porous nanotubes based on Lam strain gradient elasticity theory. The are formed nanomaterials that vary in radial direction. This study also aims obtain analytical solution model presented by for response, a simple manner, different rigid or restrained boundary conditions. torsion angle nanotube defined infinite Fourier series. Then, Stokes’ transformation applied force conditions desired state. An eigenvalue problem established with help two systems equations obtained. problem, which includes deformable springs at both ends nanotube, appears as general can find frequencies. It shown vibrational responses be significantly influenced through‐radius gradings material, material length scale parameters and consequently predicted giving proper values spring parameters.

Язык: Английский

Процитировано

2