Chirality and scale effects on mechanical buckling properties of zigzag double-walled carbon nanotubes

Benguediab, Soumia; Tounsi, Abdelouahed; Zidour, Mohamed; Semmah, Abdelwahed

doi:10.1016/j.compositesb.2013.08.020

Cited by 100 publications

(32 citation statements)

References 32 publications

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“…Carbon nanotubes (CNTs) have been demonstrated to exhibit great potential as nanofillers for polymer-based nanocomposites owing to their unique structure and excellent mechanical chemical, electronic and thermal properties (4). CNTs subjected to bending are especially prone to buckling because of their high aspect ratio; the bulking behaviour of the nanobeams may provide extra energy absorption to improve the fracture toughness (5,6). Extensive research has been performed on CNT-reinforced toughening of polymer composites (7)(8)(9)(10).…”

Section: Introductionmentioning

confidence: 99%

Investigation into the toughening mechanism of epoxy reinforced with multi-wall carbon nanotubes

Zhang

Zhai

et al. 2015

E-Polymers

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This study reports the reinforcement and fracture toughening mechanism of pristine multi-walled carbon nanotubes (MWCNTs) on epoxy matrix. The tensile strength and fracture energy (G IC ) of the epoxy polymer increased simultaneously upon the addition of a small amount of MWCNTs. The fracture surfaces of single-edgenotch three-point bending test specimens were analysed by scanning electron microscopy, and the double-notch four-point bending technique was used to investigate the fracture process by transmission electron microscopy, respectively. MWCNT pull-out and subsequent plastic void growth were found; meanwhile, fracture of MWCNTs was observed along the crack propagation path. The theoretical model of shearing band initiated by the stress concentrations around the MWCNTs is the dominant toughening mechanism. While the crack bridging of MWCNTs and the plastic void growth of epoxy also have a toughening effect.

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Section: Introductionmentioning

confidence: 99%

Investigation into the toughening mechanism of epoxy reinforced with multi-wall carbon nanotubes

Zhang

Zhai

et al. 2015

E-Polymers

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“…In all examples of the present work, a shear correction factor of 5/6 [40] is used for the present theory. The Poisson's ratio of the plate is assumed to be constant through the thickness and equal to 0.3.…”

Section: Exact Solution For a Simply Supportedmentioning

confidence: 99%

Bending and free vibration analysis of functionally graded plates using a simple shear deformation theory and the concept the neutral surface position

Bellifa

Benrahou

Hadji

et al. 2015

J Braz. Soc. Mech. Sci. Eng.

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167

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“…Since vibration analysis of nanostructures is an important issue for efficient design and use of many Nanoelectro-mechanical systems (NEMS) such as sensors and actuators, present study determines the vibration characteristics of embedded orthotropic circular and elliptical nano-plates based on the nonlocal theory of elasticity. There are already different studies on the use of nonlocal continuum modeling in vibration and dynamic analysis of Carbon nano-tubes (CNTs) and nano-beams [18][19][20][21][22][23][24][25][26][27][28][29]. Similar to nano-beams and nanotubes, nano-plates possess superior mechanical properties [30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis of orthotropic circular and elliptical nano-plates embedded in elastic medium based on nonlocal Mindlin plate theory and using Galerkin method

Anjomshoa

Tahani

2016

J Mech Sci Technol

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In the present study a continuum model based on the nonlocal elasticity theory is developed for free vibration analysis of embedded orthotropic thick circular and elliptical nano-plates rested on an elastic foundation. The elastic foundation is considered to behave like a Pasternak type of foundations. Governing equations for vibrating nano-plate are derived according to the Mindlin plate theory in which the effects of shear deformations of nano-plate are also included. The Galerkin method is then employed to obtain the size dependent natural frequencies of nano-plate. The solution procedure considers the entire nano-plate as a single super-continuum element. Effect of nonlocal parameter, lengths of nano-plate, aspect ratio, mode number, material properties, thickness and foundation on circular frequencies are investigated. It is seen that the nonlocal frequencies of the nano-plate are smaller in comparison to those from the classical theory and this is more pronounced for small lengths and higher vibration modes. It is also found that as the aspect ratio increases or the nanoplate becomes more elliptical, the small scale effect on natural frequencies increases. Further, it is observed that the elastic foundation decreases the influence of nonlocal parameter on the results. Since the effect of shear deformations plays an important role in vibration analysis and design of nano-plates, by predicting smaller values for fundamental frequencies, the study of these nano-structures using thick plate theories such as Mindlin plate theory is essential.

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Chirality and scale effects on mechanical buckling properties of zigzag double-walled carbon nanotubes

Cited by 100 publications

References 32 publications

Investigation into the toughening mechanism of epoxy reinforced with multi-wall carbon nanotubes

Investigation into the toughening mechanism of epoxy reinforced with multi-wall carbon nanotubes

Bending and free vibration analysis of functionally graded plates using a simple shear deformation theory and the concept the neutral surface position

Vibration analysis of orthotropic circular and elliptical nano-plates embedded in elastic medium based on nonlocal Mindlin plate theory and using Galerkin method

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