Buckling and postbuckling of functionally graded multilayer graphene platelet-reinforced composite beams

Yang, Jie; Wu, Helong; Kitipornchai, S.

doi:10.1016/j.compstruct.2016.11.048

Cited by 426 publications

(99 citation statements)

References 37 publications

(40 reference statements)

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“…Ramanathan et al fabricated functionalized graphene reinforced poly (methyl methacrylate) (PMMA) nanocomposites and found that an addition of only 1% wt of functionalized graphene sheet into the PMMA matrix leads to an increase of elastic modulus by 80% and an increase of the ultimate strength by 20% over that of the pure PMMA. In addition to experimental studies, the remarkable reinforcing effect of graphene and its derivatives were also evidenced by extensive theoretical work, including molecular dynamics (MD) simulations, finite element method (FEM), and micromechanics modelling …”

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen functionalization on interfacial behavior of defective‐graphene/polymer nanocomposites

Sun

Zhang

et al. 2019

Polymer Composites

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The interfacial debonding between the graphene sheet and the polymer matrix plays a vital role in determining the performance of graphene/polymer nanocomposites. This paper investigates the influence of hydrogen functionalization on interfacial sliding of polymer nanocomposites reinforced by graphene containing defects using molecular dynamics simulations. Results show that the surface‐hydrogenated graphene/epoxy system significantly outperformed the edge‐hydrogenated case in terms of the shear strength due to better interfacial bonding between graphene sheet and epoxy matrix. The presence of defects decreases the shear strength in both surface‐ and edge‐hydrogenated graphene/epoxy nanocomposites. It is also found that increasing the functionalization degree and temperature improves the interfacial shear properties for all tested nanocomposites. The mechanisms of functionalization underlying the interfacial sliding of graphene/epoxy nanocomposites are explored at the nanoscale, indicating that functionalization is an effective way to achieve improved interfacial properties for graphene reinforced nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Effect of hydrogen functionalization on interfacial behavior of defective‐graphene/polymer nanocomposites

Sun

Zhang

et al. 2019

Polymer Composites

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“…In order to effectively make use of a low content of graphene, Song et al [24] proposed the functionally graded multilayer graphene nanocomposite in which the graphene reinforcements are nonuniformly distributed in a layer-wise manner in the thickness direction, and found that the free and forced vibration performances of polymer nanocomposite plates can be further enhanced by distributing more GPLs near the top and bottom surfaces of the plate. Subsequently, Yang and his co-authors studies the buckling and postbuckling [25], and dynamic instability [26] of functionally graded multilayer graphene plateletreinforced composite (GPLRC) beams. Their results revealed that an addition of a low content of GPLs into epoxy can considerably increase the buckling and postbuckling strength and reduce the principle unstable region.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The GPL volume fraction GPL V for the three symmetrical distribution patterns in Fig. 1 are governed by [25,26] U-GPLRC:…”

Section: Multilayer Gplrc Platementioning

confidence: 99%

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Thermal buckling and postbuckling of functionally graded graphene nanocomposite plates

2017

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This paper deals with the thermal buckling and postbuckling of functionally graded multilayer nanocomposite plates reinforced with a low content of graphene platelets (GPLs). It is assumed that GPL reinforcements are randomly oriented and uniformly dispersed in each individual GPL-reinforced composite (GPLRC) layer but the concentration follows a layerwise variation across the plate thickness. The modified Halpin-Tsai micromechanics model that takes into account the GPL geometry effect is adopted to estimate the effective Young's modulus of GPLRC layers. Within the framework of the first-order shear deformation theory, the nonlinear governing equations are derived by applying the principle of virtual displacements and then solved by using a differential quadrature-based iteration technique. Parametric studies are conducted to examine the influences of GPL distribution pattern, concentration and geometry, as well as in-plane force on the thermal buckling and postbuckling behaviours. Our results show that distributing more GPLs near the surface layers is capable of reinforcing the thermal buckling and postbuckling performances of GPLRC plates. Whether the thermal buckling and postbuckling resistance increases or decreases with the increases in GPL weight fraction, aspect ratio and width-to-thickness ratio is highly dependent on the GPL distribution pattern.

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“…To make the best use of graphene's exceptionally high Young's modulus to develop advanced lightweight structures, Yang and his co-workers [22][23][24][25][26][27] most recently proposed the concept of functionally graded (FG) graphene reinforced multilayer structures and investigated the buckling, postbuckling, free and forced vibration, nonlinear bending, and dynamic stability of functionally graded graphene reinforced beams and plates. The objective of this paper is to develop three-dimensional elasticity theory based analytical solutions for the thermal-elastic bending of functionally graded nanocomposite circular and annular plates reinforced with GPLs subjected to a combined thermo-mechanical loading.…”

Section: Thermo-mechanical Bending Solution Of Functionally Gradedmentioning

confidence: 99%

3D thermo-mechanical bending solution of functionally graded graphene reinforced circular and annular plates

Yang

Kitipornchai

Yang

et al. 2017

Applied Mathematical Modelling

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T -1 - Highlights• 3D thermo-elastic bending solutions are obtained for functionally graded circular and annular plates reinforced with GPLs.• Thinner GPLs are preferred to achieve better enhancement in bending stiffness hence reduced bending deflection.• The parabolic GPL distribution offers the best reinforcing effect, followed by uniform then linear distribution patterns.• For plates reinforced by uniformly distributed GPLs, the temperature field and radial stress distribution are not affected by GPL's total content. ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T-Key words: Circular plate; Functionally graded materials; Graphene reinforced composites; Thermo-elasticity; Analytical solution. 1． IntroductionAs one of the strongest and stiffest material in nature, graphene and its derivatives such as graphene nanoplatelets (GPLs) plates with traction free on the upper and bottom surface of the plate is extended in this paper to derive the exact solutions of thermo-mechanically loaded functionally graded graphene reinforced circular and annular plates with different boundary conditions. The thermal loading is due to a steady temperature field associated with three typical thermal boundary conditions. The effects of GPL weight fraction, GPL distribution pattern, thickness to radius ratio, and boundary condition on the deformation and stress distributions of the plate are investigated in detail through a comprehensive parametric study. 2． Description of FG Polymer nanocomposite reinforced with GPLsThe 21ACCEPTED MANUSCRIPT  are the weight fraction indices. A C C E P T E D M A N U S C R I P T 3． Theoretical formulations Governing equationsConsider the axisymmetric bending problem of an annular plate of height h , inner radius b , outer radius a , defined in the cylindrical coordinates (r, θ, z) as shown in Fig. 1(b). The plate is subjected to uniform loads 1 q and 2 q in conjunction with a through-thickness temperature field T. The annular plate turns to be a circular plate when the inner radius b is zero. Denote   22 12 13 11 13 12 12 13 22 2 2 2 11 13 12 11 11 13 2 11 12 1 13 3 1 1 1 , 2 2 4 13 33 13 13 33 13 33 13 1 33 3 2,  55 10 cA  11 13 55 55 1    24 33 13 1 33 3 2 12ACCEPTED MANUSCRIPT Temperature field () TzIt is assumed in this paper that the plate is under a steady state temperature ACCEPTED MANUSCRIPTThe linear thermal boundary conditions [35,36] With the integral constants 1  and 2  obtained from the spec...

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Buckling and postbuckling of functionally graded multilayer graphene platelet-reinforced composite beams

Cited by 426 publications

References 37 publications

Effect of hydrogen functionalization on interfacial behavior of defective‐graphene/polymer nanocomposites

Effect of hydrogen functionalization on interfacial behavior of defective‐graphene/polymer nanocomposites

Thermal buckling and postbuckling of functionally graded graphene nanocomposite plates

3D thermo-mechanical bending solution of functionally graded graphene reinforced circular and annular plates

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