Investigating the mechanical properties of single walled carbon nanotube reinforced epoxy composite through finite element modelling

Zuberi, M. Jibran S.; Esat, Volkan

doi:10.1016/j.compositesb.2014.11.020

Cited by 49 publications

(10 citation statements)

References 50 publications

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“…Substitution of the strain-displacement relations (equation (3)) into the constitutive equation (equation (2)) and then substitution of the results into the equilibrium equation (equation 1) yields a nonhomogeneous second-order ordinary linear differential equation [25,28,57]. Equations (4) and (5) are the general solutions for radial displacement fields of both domains (see equations (31) to (35) in Appendix 1 for details) (5) Note that in the inner filler region, w ðiÞ r ¼0 ¼ 0 j…”

Section: Derivation Of Exact Analytical Solutions For Displacement Fimentioning

confidence: 99%

Generally cylindrical orthotropic constitutive modeling of matrix-filled carbon nanotubes: Transverse mechanical properties and responses

Askari

Ghasemi‐Nejhad

2018

Jnl of Sandwich Structures & Materials

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The main objective of this article is to introduce exact analytical closed-form solutions for the prediction of effective transverse Young’s modulus and Poisson ratio of a matrix-filled nanotube (i.e., a representative element of nanotube-based nanocomposites), as well as its mechanical behavior, when subjected to external loads. In this work, both the nanotube and its filler were considered to be generally cylindrical orthotropic. To ensure no loss of generality, the no plane strain condition was used, and the axial strain was taken into consideration to obtain a more precise set of solutions. Analytical formulae were developed based on the well-established principles of linear elasticity and continuum mechanics, considering effective orthotropic properties for both constituents as continuum tubes. To validate and verify the accuracy of the closed-form solutions obtained from the analytical approach, a three-dimensional finite element analysis was performed, and results were compared to those obtained from the analytical exact solutions. Excellent agreement was achieved, and the analytically obtained solutions were verified.

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Section: Derivation Of Exact Analytical Solutions For Displacement Fimentioning

confidence: 99%

Generally cylindrical orthotropic constitutive modeling of matrix-filled carbon nanotubes: Transverse mechanical properties and responses

Askari

Ghasemi‐Nejhad

2018

Jnl of Sandwich Structures & Materials

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“…[1][2][3][4][5] Recently, fibers-reinforced epoxy composites have attracted many attentions. [6][7][8][9][10][11][12][13][14][15] Studies show that with a small amount of fibers, generally <5wt%, dispersed in an epoxy resin substantial improvement in the mechanical properties can be achieved. [16][17][18] The incorporation of fiber into epoxy matrix offers many advantages over the non-reinforced or pristine materials counterparts, but the notable disadvantage of fiber, nor nature or synthetic fiber, is its weak combination with epoxy matrix.…”

Section: Introductionmentioning

confidence: 99%

Improved mechanical properties of epoxy-based composites with hyperbranched polymer grafting glass-fiber

Qin

Zhu

et al. 2016

Polym. Adv. Technol.

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A glass-fiber, grafted by hyperbranched polymer with hydroxyl group (GF-HBPH), reinforced epoxy-based composite was evaluated for mechanical properties and compared with the neat epoxy and silanized glass-fiber, GF-APS. The epoxy/GF-HBPH composites were studied by attenuated total internal reflectance infrared spectroscopy, 1 H nuclear magnetic resonance spectroscopy, thermal gravimetric analysis, mechanical properties analysis, and field emission-scanning electron microscopy. The results showed that the incorporation of GF-HBPH could simultaneously enhance the mechanical properties of the epoxy composites. Field emission-scanning electron microscopy images of the fracture surfaces of the test specimens were used to support the results and conclusions.

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“…journal.ump.edu.my/jmes ◄ and deformation-induced crystallographic structures. Crystal-based FEM is a versatile continuum mechanics approach, which can be used for solving both elastic-plastic and purely elastic problems of multi-body systems and complex CNTs (> 1.0 x 10 5 atoms) model structures [4,[17][18][19][20][21]. In 2008, Yao et al [22] explored the buckling response of CNTs with different layers by applying a modified FEM.…”

Section: Introductionmentioning

confidence: 99%

Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

Golesorkhie¹,

Navi²

2020

JMES

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Critical Bucking Load (CBL) is one of the essential parameters to describe the mechanic stabilities of materials, e.g. the low-dimensional carbon nanostructures. While the CBL of pristine carbon nanotubes have been previously investigated using the quantum mechanics-based calculations, the effect of geometrical variation on the CBL of carbon nanomaterials is rarely reported since it need considerably large atomic models, which needs high computational cost. In this study, both the analytical and Finite Element (FE) methods were employed to systematically explore the impact of atomic vacancies, shapes and heterostructures on the CBLs of carbon nanomaterials with the acceptable computational cost. Our studies on the pristine CNTs first demonstrate the validity of the method we used. After that, the systems with mono-/bi-/tri-/pinole-vacancies either on nanocones, nanotube, linearly-joined nanotubes or angle-adjoined were simulated and analyzed. Our results reveal that the CBL values decrease with the increase of the aspect ratio of all considered nanomaterials. Based on the obtained results, the CBL of nanocone with the aspect ratio of 1, reduces significantly, from 50 nN to 10 nN when the aspect ratio is 3. The CBL of homogeneous, capped, and joint CNTs reduces to below 2 nN when the aspect ratio is above 14. The introduction of geometric variations can greatly affect the CBL values. The larger atomic vacancy has more serious impact on the CBLs. The most highlighted impact is for the pinhole vacancy where the CBL reduces to up to 70% of the original value. Our studies on linearly-joint and angle-joint carbon hybrids further demonstrate that the CBL can also be affected by the boundary conditions and joint structures of the hybrids.

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Investigating the mechanical properties of single walled carbon nanotube reinforced epoxy composite through finite element modelling

Cited by 49 publications

References 50 publications

Generally cylindrical orthotropic constitutive modeling of matrix-filled carbon nanotubes: Transverse mechanical properties and responses

Generally cylindrical orthotropic constitutive modeling of matrix-filled carbon nanotubes: Transverse mechanical properties and responses

Improved mechanical properties of epoxy-based composites with hyperbranched polymer grafting glass-fiber

Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

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