Stability and vibration analysis of CNT-Reinforced functionally graded laminated composite cylindrical shell panels using semi-analytical approach

This article presents an analytical study for forced vibration of a cylindrical shell which is composed of a functionally graded piezoelectric material (FGPM). The cylindrical shell is assumed to have two-constituent material distributions through the thickness of the structure, and material properties of the cylindrical shell are assumed to vary according to a power-law distribution in terms of the volume fractions for constituent materials, the exact solution for the forced vibration problem is presented. Numerical results are presented to show the effect of electric excitation, thermal load, mechanical load and volume exponent on the static and force vibration of the FGPM cylindrical shell. The goal of this investigation is to optimize the FGPM cylindrical shell in engineering, also the present solution can be used in the forced vibration analysis of cylindrical smart elements.

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Free vibration analysis of laminated composite and functionally graded sector plates with general boundary conditions

Composite Structures ◽

10.1016/j.compstruct.2015.06.008 ◽

2015 ◽

Vol 132 ◽

pp. 720-736 ◽

Cited By ~ 22

Author(s):

Zhu Su ◽

Guoyong Jin ◽

Xueren Wang

Keyword(s):

Free Vibration ◽

Boundary Conditions ◽

Vibration Analysis ◽

Laminated Composite ◽

Free Vibration Analysis ◽

Functionally Graded ◽

General Boundary ◽

General Boundary Conditions

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Mechanical Response of Laminated Composite Cylindrical Shell Subjected to Radial Patch Loading

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.229-231.292 ◽

2012 ◽

Vol 229-231 ◽

pp. 292-296

Author(s):

Farzin Firouzabadi ◽

Amran Bin Ayob ◽

S. Sharifi Teshnizi ◽

G. Sharifishourabi

Keyword(s):

Cylindrical Shell ◽

Radial Displacement ◽

Close Agreement ◽

Mechanical Response ◽

Laminated Composite ◽

Composite Cylindrical Shell ◽

Main Character ◽

Different Types ◽

Operation Parameters ◽

Patch Loading

Due to significant amount of applications in industries, composite materials and structures are subjected to many different types of loading. One of the most common types of these loading is radial patch loading. Due to the complexity, calculation of radial shell deflection is the main character of the cylinder behavior when subjected to patch loading. The aim of this study is to investigate the mechanical behavior of composite cylindrical shell subjected to radial patch loading. The radial deflection of the laminated shell is investigated in detail where analytical and finite element methods (FEM) are used. The results through both approaches are compared to validate the accuracy of the analytical method. This is followed by a parametric study to determine the effect of some operation parameters on radial displacement. The results show close agreement between the analytical and numerical methods.

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Buckling Analysis of Multilayered Functionally Graded Composite Cylindrical Shells

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.108.74 ◽

2011 ◽

Vol 108 ◽

pp. 74-79

Author(s):

Mohammad Hossein Kargarnovin ◽

Mehdi Hashemi

Keyword(s):

Finite Element ◽

Cylindrical Shell ◽

Shape Function ◽

Volume Fraction ◽

Buckling Analysis ◽

Functionally Graded ◽

Buckling Load ◽

Composite Cylindrical Shell ◽

Functionally Graded Composite ◽

Axial Buckling

In this paper, the buckling analysis of a multilayered composite cylindrical shell which volume fraction of its fiber varies according to power law in longitudinal direction, due to applied compressive axial load is studied. Rule of mixture model and reverse of that are employed to represent elastic properties of this fiber reinforced functionally graded composite. Strain displacement relations employed are based on Reissner-Naghdi-Berry’s shell theory. The displacement finite element model of the equilibrium equations is derived by employing weak form formulation. The Lagrangian shape function for in-plane displacements and Hermitian shape function for displacement in normal direction to the surface of mid-plane are used. Then, finite element code is written in MATLAB based on stated method to obtain the critical axial buckling load. Numerical results show that despite having the same layout and average volume fraction of fibers, the critical axial buckling load of functionally graded composite cylindrical shell is more than that of traditional composite in which the volume fraction of its fiber is constant throughout the shell.

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