Impact analysis of functionally-graded graphene nanoplatelets-reinforced composite plates laying on Winkler-Pasternak elastic foundations applying a meshless approach

Buckling and postbuckling behavior of carbon nanotube (CNT) reinforced thick composite plates resting on elastic foundations and subjected to thermomechanical loads are investigated in this paper. The plates are subjected to uniform uniaxial compression in a thermal environment or the combined action of nondestabilizing preexisting uniaxial compression and uniform temperature rise. CNTs are reinforced into matrix through functionally graded distributions. The properties of constitutive materials are assumed to be temperature dependent and effective properties of CNT-reinforced composite are determined according to an extended rule of mixture. Governing equations are based on a higher order shear deformation theory taking von Kárman nonlinearity, initial geometrical imperfection, elasticity of tangential restraints of unloaded edges and plate-foundation interaction into consideration. Analytical solutions are assumed to satisfy simply supported boundary conditions and Galerkin method is applied to obtain nonlinear load-deflection relations. Numerical analyses are carried out to show the effects of CNT distribution patterns, preexisting loads, initial imperfection, degree of in-plane constraint, and elastic foundations on the nonlinear thermomechanical stability of CNT-reinforced composite plates.

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Vibration analysis of graphene nanoplatelets’ reinforced composite plates integrated by piezo-electromagnetic patches on the piezo-electromagnetic media

Waves in Random and Complex Media ◽

10.1080/17455030.2021.1956017 ◽

2021 ◽

pp. 1-31

Author(s):

Mohammad Khorasani ◽

Zeinab Soleimani-Javid ◽

Ehsan Arshid ◽

Saeed Amir ◽

Ömer Civalek

Keyword(s):

Vibration Analysis ◽

Composite Plates ◽

Graphene Nanoplatelets ◽

Reinforced Composite

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Static and Free Vibration Analyses of Functionally Graded Carbon Nanotube Reinforced Composite Plates using CS-DSG3

International Journal of Computational Methods ◽

10.1142/s0219876218501335 ◽

2019 ◽

Vol 17 (03) ◽

pp. 1850133 ◽

Cited By ~ 3

Author(s):

T. Truong-Thi ◽

T. Vo-Duy ◽

V. Ho-Huu ◽

T. Nguyen-Thoi

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Free Vibration ◽

Numerical Solutions ◽

Composite Plates ◽

Functionally Graded ◽

Triangular Element ◽

Reinforced Composite ◽

Strain Smoothing ◽

Discrete Shear Gap

This study presents an extension of the cell-based smoothed discrete shear gap method (CS-DSG3) using three-node triangular elements for the static and free vibration analyses of carbon nanotube reinforced composite (CNTRC) plates. The single-walled carbon nanotubes (SWCNTs) are assumed to be uniformly distributed (UD) and functionally graded (FG) distributed along the thickness direction. The material properties of carbon nanotube-reinforced composite plates are estimated according to the rule of mixture. The governing equations are developed based on the first-order shear deformation plate theory (FSDT). In the CS-DSG3, each triangular element will be divided into three sub-triangles, and in each sub-triangle, the stabilized discrete shear gap method is used to compute the strains and to avoid the transverse shear locking. Then the strain smoothing technique on the whole triangular element is used to smooth the strains on these three sub-triangles. Effects of several parameters, such as the different distribution of carbon nanotubes (CNTs), nanotube volume fraction, boundary condition and width-to-thickness ratio of plates are investigated. In addition, the effect of various orientation angles of CNTs is also examined in detail. The accuracy and reliability of the proposed method are verified by comparing its numerical solutions with those of other available results in the literature.

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Frequency optimization of laminated functionally graded carbon nanotube reinforced composite quadrilateral plates using smoothed FEM and evolution algorithm

Journal of Composite Materials ◽

10.1177/0021998317737831 ◽

2017 ◽

Vol 52 (14) ◽

pp. 1971-1986 ◽

Cited By ~ 7

Author(s):

T Vo-Duy ◽

T Truong-Thi ◽

V Ho-Huu ◽

T Nguyen-Thoi

Keyword(s):

Carbon Nanotube ◽

Optimization Problem ◽

Volume Fraction ◽

Differential Evolution Algorithm ◽

Composite Plates ◽

Functionally Graded ◽

Optimization Approach ◽

Reinforced Composite ◽

Design Variables ◽

Evolution Algorithm

The paper presents an efficient numerical optimization approach to deal with the optimization problem for maximizing the fundamental frequency of laminated functionally graded carbon nanotube-reinforced composite quadrilateral plates. The proposed approach is a combination of the cell-based smoothed discrete shear gap method (CS-DSG3) for analyzing the first natural frequency of the functionally graded carbon nanotube reinforced composite plates and a global optimization algorithm, namely adaptive elitist differential evolution algorithm (aeDE), for solving the optimization problem. The design variables are the carbon nanotube orientation in the layers and constrained in the range of integer numbers belonging to [−900 900]. Several numerical examples are presented to investigate optimum design of quadrilateral laminated functionally graded carbon nanotube reinforced composite plates with various parameters such as carbon nanotube distribution, carbon nanotube volume fraction, boundary condition and number of layers.

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