Vibro-acoustic behavior of functionally graded carbon nanotube reinforced polymer nanocomposite plates

George, Nivish; Pitchaimani, Jeyaraj; Murigendrappa, S. M.; Babu, MC Lenin

doi:10.1177/1464420716640301

Cited by 10 publications

(8 citation statements)

References 36 publications

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“…One of the limitations of this method is that it is valid only for simply supported boundary conditions; it cannot be generalised for all boundary conditions. George et al 20 analysed the vibration behaviour of carbon nanotube reinforced FG nanocomposite using finite element method (FEM) and Rayleigh integral technique. Using FEM, deflection at any point can be obtained, but one remains unaware of what is happening inside the element.…”

Section: Introductionmentioning

confidence: 99%

Size-dependent natural frequencies of functionally graded plate with out of plane material inhomogeneity using Eringen’s theory of nonlocal elasticity

Singh

Azam

Ranjan

2019

Proceedings of the Institution of Mechanical Engineers, Part L:

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Nonlocal effect is one of the critical reasons which cause an extraordinary vibration response in small-scale structures. In the present work, vibration characteristics of functionally graded nonlocal plate are studied using Eringen’s nonlocal classical elasticity theory. A computationally efficient numerical method has been proposed in this study by reformulating the classical plate theory and Rayleigh–Ritz method using nonlocal differential relationship of Eringen’s theory in conjugation with algebraic polynomial displacement functions. The reformulated method helps to evaluate the natural frequencies of functionally graded nonlocal plates subjected to all possible combinations of edge conditions. The material properties are assumed to vary through the thickness of the plate following the power law. The computed results of natural frequencies are first tested for convergence and then validated with the published one. A parametric study has been thoroughly conducted focusing on the effects of aspect ratio, nonlocal parameter, material property index and Young’s modulus ratio on the natural frequency parameters of the functionally graded nonlocal plate. It has been observed that the material property index and aspect ratio affect the vibration behaviour of the functionally graded plate. The study also establishes that nonlocal effect has a pronounced influence on the higher modes of vibration of functionally graded plate. 3D mode shapes of functionally graded material nonlocal plate have also been reported.

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Section: Introductionmentioning

confidence: 99%

Size-dependent natural frequencies of functionally graded plate with out of plane material inhomogeneity using Eringen’s theory of nonlocal elasticity

Singh

Azam

Ranjan

2019

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…[13][14][15][16] From the studies, it is understood that the material properties of the CNT-reinforced polymer mainly depends on the structure of CNT, type of polymer, dispersion of CNT in matrix, fabrication process, and the method of analysis. [13][14][15][16] From the studies, it is understood that the material properties of the CNT-reinforced polymer mainly depends on the structure of CNT, type of polymer, dispersion of CNT in matrix, fabrication process, and the method of analysis.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, many investigations are reported on the theoretical behavior of CNTRC flat/shell panel including the experimental validation. [13][14][15][16] From the studies, it is understood that the material properties of the CNT-reinforced polymer mainly depends on the structure of CNT, type of polymer, dispersion of CNT in matrix, fabrication process, and the method of analysis. Fidelus et al [17] reported the experimental data of the thermal and the mechanical properties of CNT/polymer composite using two types of polymer, as well as two CNT configurations based on the number of walls namely, singlewalled carbon nanotube (SWCNT) and multi-walled carbon nanotube (MWCNT).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, many investigations are reported on the theoretical behavior of CNTRC flat/shell panel including the experimental validation . From the studies, it is understood that the material properties of the CNT‐reinforced polymer mainly depends on the structure of CNT, type of polymer, dispersion of CNT in matrix, fabrication process, and the method of analysis.…”

Section: Introductionmentioning

confidence: 99%

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Elastic bending and stress analysis of carbon nanotube‐reinforced composite plate: Experimental, numerical, and simulation

Mehar

Panda

2017

Adv Polym Technol

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The deflection behavior of carbon nanotube-reinforced composite plate is investigated numerically using the finite-element method and the result accuracy is established via three-point experimental bending test data. The physical composite panel model is realized with the help of new mathematical model based on the higher order kinematic theory and the responses are computed using the in-house computer code in the MATLAB environment. Further, the efficacy of the current higher order finite-element model has been established by comparing the deflection responses with those of the references, simulation values (ANSYS), and the in-house experimentation including the experimental elastic properties. Finally, the effect of different design parameters,such as aspect ratio, thickness ratio, edge constraints including the types of load on the deflection and stress responses of the composite plate has been studied in detail. K E Y W O R D Scarbon nanotube, elastic bending, experimental mechanics, finite element method, higher order shear deformation theory, simulation

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“…Due to their extraordinary mechanical and thermal properties [1][2][3] as well as large aspect ratio and low density, 4,5 carbon nanotubes (CNTs) have been extensively used to reinforce polymer materials. [6][7][8] Previous studies have demonstrated that adding a small fraction of CNTs to a polymer matrix can significantly improve the effective properties of the resulting nanocomposite. [9][10][11] The interfacial bonding between a CNT and the surrounding polymer matrix significantly affects the performance of the nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

Coefficients of thermal expansion of carbon nanotube-reinforced polyimide nanocomposites: A micromechanical analysis

Ansari

Hassanzadeh-Aghdam

Darvizeh

2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this work, a unit cell-based micromechanical model with a proper representative volume element is proposed to evaluate the coefficients of thermal expansion of carbon nanotube-reinforced polyimide nanocomposites. The model takes an interphase between carbon nanotube and polyimide matrix into account which characterizes the non-bonded van der Waals interaction between two phases. The effects of some important parameters on the coefficients of thermal expansion such as thickness and adhesion exponent of interphase, temperature deviation as well as volume fraction, diameter and waviness of carbon nanotubes are investigated in detail. It is found that the interphase plays a critical role in determining the coefficients of thermal expansion and should be incorporated into the modeling of nanocomposite. According to the obtained results, there exists a specific value for carbon nanotube diameter beyond which further increasing in carbon nanotube diameter does not affect the coefficients of thermal expansion of nanocomposite. Also, the results reveal that the carbon nanotube waviness has a significant influence on the coefficients of thermal expansion of the nanocomposite. The results of the present model are compared with those of finite element method and a very good agreement is pointed out.

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Vibro-acoustic behavior of functionally graded carbon nanotube reinforced polymer nanocomposite plates

Cited by 10 publications

References 36 publications

Size-dependent natural frequencies of functionally graded plate with out of plane material inhomogeneity using Eringen’s theory of nonlocal elasticity

Size-dependent natural frequencies of functionally graded plate with out of plane material inhomogeneity using Eringen’s theory of nonlocal elasticity

Elastic bending and stress analysis of carbon nanotube‐reinforced composite plate: Experimental, numerical, and simulation

Coefficients of thermal expansion of carbon nanotube-reinforced polyimide nanocomposites: A micromechanical analysis

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