Elastic buckling of circular annular plate reinforced with carbon nanotubes

Jam, Jafar Eskandari; Kia, S. M.; Pour, A. G.; Emdadi, M

doi:10.1002/pc.21103

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…The global stiffness and strength of laminates depend on the ply orientation and stacking sequence. The effect of CNTs' orientation angle on the instability characteristic of laminated plate is studied by Liew et al [52] and Jam and Maghamikia [53]. It was assumed in these studies that reinforcing fibers are of sufficient length to be laid in at different angles.…”

Section: Effective Poisson's Ratio For Laminatesmentioning

confidence: 99%

Static and dynamic analyses of auxetic hybrid FRC/CNTRC laminated plates

Huang

Yang

Azim

et al. 2020

Nanotechnology Reviews

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In this work, a hybrid laminated plate is developed by changing ply orientations and stacking sequences. The hybrid laminated plate is composed of carbon nanotube reinforced composite and fiber reinforced composite layers. Negative Poisson’s ratio (NPR) is obtained for the case of [22F/(22C/−22C)3T/−22F] laminate. A theoretical laminated model considering geometric nonlinearity and shear deformation is presented. Based on a two-step perturbation method, the solutions of the motion equations are obtained to capture the nonlinear frequencies and load–deflection curves. On this basis, the fourth-order Runge–Kutta method is used to obtain the dynamic response of hybrid laminated plates. The presented model is verified by comparing the results obtained analytically and numerically. Several factors such as loading and distribution of carbon nanotubes (CNTs), and foundation type are considered in parametric study. Numerical results indicate that the thermal-mechanical behavior of hybrid laminated plates significantly improved by properly adjusting the CNT distribution. In addition, the results reveal that changes in temperature and foundation stiffness have pronounced influence on the nonlinear vibration characteristics of hybrid laminate plates with NPR as compared to those with positive Poisson’s ratio.

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Section: Effective Poisson's Ratio For Laminatesmentioning

confidence: 99%

Static and dynamic analyses of auxetic hybrid FRC/CNTRC laminated plates

Huang

Yang

Azim

et al. 2020

Nanotechnology Reviews

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“…They instigated the effects of elastic coefficients of foundation, boundary conditions, material, and geometrical parameters. Elastic buckling of circular and annular plate reinforced with CNTs was investigated by Jam et al using optimized Rayleigh‐Ritz. The effects of CNTs orientation angle, boundary conditions, geometric ratio of plate, and agglomeration of CNTs were carried out.…”

Section: Introductionmentioning

confidence: 99%

The effects of carbon nanotube waviness and aspect ratio on the buckling behavior of functionally graded nanocomposite plates using a meshfree method

Shams

Soltani

2015

Polymer Composites

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This work deals with the effects of waviness and aspect ratio on the buckling behavior of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) plates subjected to in-plane loads using reproducing kernel particle method (RKPM) based on modified first-order shear deformation theory (FSDT). Wavy single-walled carbon nanotubes (CNTs) are embedded in a polymer matrix and distributed in four types of distributions. The material properties of an FG-CNTRC plate are assumed to be graded along the thickness direction of the plate and estimated through a micromechanical model based on the extended rule of mixture. The modified shear correction factors evaluated involving the nonuniform shear stress distribution through the thickness of the FG-CNTRC plate. For the imposition of the essential boundary conditions the full transformation approach is utilized. The validity and accuracy of the RKPM method is established by a comparison with the obtained results of available literature data. Moreover, the effects of distribution, volume fraction, waviness, and aspect ratio of CNTs are investigated on the buckling behavior of FG-CNTRC plates for various boundary conditions, plate width-to-thickness and aspect ratios. Detailed parametric studies demonstrate that the waviness and aspect ratio of CNTs have noticeable effects on buckling behavior of carbon nanotube-reinforced composite (CNTRC) plates. POLYM.

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“…The Effects of CNTs volume fraction, CNTs orientation angles, and agglomeration of CNTs are important for studying the buckling of structures. Jam and Maghamikia [17] derived the buckling equations of laminated rectangular plates using classical plate theory. Also the critical compressive load in the buckling of circular and annular composite plates reinforced with carbon nanotubes (CNTs) is calculated using finite element method by same authors [18].…”

Section: Introductionmentioning

confidence: 99%

“…The developed model is based on the third-order shear deformation theory for moderately thick laminated plates, and the effects of CNTs orientation angles and thickness-to-inner radius ratio on the buckling of composite plates are discussed. Jam et al [19] obtained the buckling analysis of circular annular plate reinforced by CNTs subjected to compres-sive and torsional loads with various axially symmetric boundary conditions. The results illustrate that the critical buckling load decreases as a result of non uniform dispersion of CNTs in the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Composite Cylindrical Shells Reinforced by Carbon Nanotubes

Jam

Asadi

2012

Archive of Mechanical Engineering

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In this paper, the authors investigate a cylindrical shell reinforced by carbon nanotubes. The critical buckling load is calculated using analytical method when it is subjected to compressive axial load. The Mori-Tanaka method is firstly utilized to estimate the effective elastic modulus of composites having aligned oriented straight CNTs. The eigenvalues of the problem are obtained by means of an analytical approach based on the optimized Rayleigh-Ritz method. There is presented a study on the effects of CNTs volume fraction, thickness and aspect ratio of the shell, CNTs orientation angle, and the type of supports on the buckling load of cylindrical shells. Furthermore the effect of CNTs agglomeration is investigated when CNTs are dispersed none uniformly in the polymer matrix. It is shown that when the CNTs are arranged in 90_ direction, the highest critical buckling load appears. Also, the results are plotted for different longitudinal and circumferential mode numbers. There is a specific value for aspect ratio of the cylinder that minimizes the buckling load. The results reveal that for very low CNTs volume fractions, the volume fraction of inclusions has no important effect on the critical buckling load.

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Elastic buckling of circular annular plate reinforced with carbon nanotubes

Cited by 4 publications

References 16 publications

Static and dynamic analyses of auxetic hybrid FRC/CNTRC laminated plates

Static and dynamic analyses of auxetic hybrid FRC/CNTRC laminated plates

The effects of carbon nanotube waviness and aspect ratio on the buckling behavior of functionally graded nanocomposite plates using a meshfree method

Buckling Analysis of Composite Cylindrical Shells Reinforced by Carbon Nanotubes

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