Mechanical Properties Investigation of Defected, Twisted, Elliptic, Bended and Hetero-junction Carbon Nanotubes Based on FEM

Hemmatian, Hossein; Fereidoon, Abdolhossein; Rajabpour, Morteza

doi:10.1080/1536383x.2012.684183

Cited by 10 publications

(14 citation statements)

References 26 publications

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“…The literature results for Young’s and shear moduli are summarised in Table 5 . Most studies on the elastic properties of HJs reported in the literature are dealing with the evaluation of Young’s modulus of cone-heterojunctions [ 27 , 30 , 34 , 35 , 36 , 38 ]. The discrepancies observed in the values of the Young’s modulus of HJs ( Table 5 ) can be related to different modelling and calculation approaches used.…”

Section: Resultsmentioning

confidence: 99%

“…To our knowledge, only a few papers have been devoted to the evaluation of the shear modulus of HJs [ 27 , 35 , 36 ]. In case of the shear modulus, the results available in the literature are less than for the Young’s modulus and have little consistency ( Table 5 ).…”

Section: Resultsmentioning

confidence: 99%

“…The elastic properties of HJs have been evaluated under the tensile [ 34 , 35 , 36 , 37 , 38 ] and torsion [ 27 , 35 , 39 , 40 , 41 ] loading conditions, using the NCM approach. Ghavamian et al and Yengejeh et al [ 35 , 42 ] used the NCM approach for studying the buckling behaviour of HJs.…”

Section: Introductionmentioning

confidence: 99%

“…Scarpa et al [ 34 ] also described this feature when analysing the tensile test results of (5, 5)–(10, 10) HJs, in order to calculate the Poisson’s ratio. Most of the studies on the evaluation of the HJ elastic properties are dealing with cone-heterojunctions [ 30 , 34 , 36 , 38 , 39 , 40 , 41 ], and only a few works described the mechanical behaviour of the HJs with bent connection [ 27 , 35 ]. The common finding of some of these works [ 27 , 35 , 36 , 38 , 39 , 40 ] is the reduction of the elastic properties of the HJs (their rigidities, Young’s and shear moduli), when compared to the elastic properties of the constituent SWCNTs.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Characterisation of Single-Walled Carbon Nanotube Heterojunctions: Numerical Simulation Study

et al. 2020

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The elastic properties of single-walled carbon nanotube heterojunctions were investigated using conventional tensile, bending and torsion tests. A three-dimensional finite element model was built in order to describe the elastic behaviour of cone heterojunctions (armchair–armchair and zigzag–zigzag). This comprehensive systematic study, to evaluate the tensile, bending and torsional rigidities of heterojunctions, enabled the formulation analytical methods for easy assessment of the elastic properties of heterojunctions using a wide range of their geometrical parameters.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical Characterisation of Single-Walled Carbon Nanotube Heterojunctions: Numerical Simulation Study

et al. 2020

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“…They also concluded that the FEM is a valuable tool for the characterization of hetero-junction CNTs. Hemmatian et al [39] also used the FEM for the evaluation of the elastic properties of the defected, twisted, elliptic, bended, and hetero-junction CNTs by the creation of 3D FE models. Their results postulated that the torsional angle of twisted CNTs, the cross-sectional aspect ratio of elliptic CNTs, the bending angle of bended CNTs, and the choice of the length and the chirality of hetero-junction CNTs significantly influence their mechanical properties.…”

Section: Literature Review: Mechanical Properties Of Hetero-junction mentioning

confidence: 99%

Numerical Nanomechanics of Perfect and Defective Hetero‐junction CNTs

Ghavamian

Rahmandoust

Öchsner

2016

Advanced Computational Nanomechanics

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Micromechanical modeling and characterization of elastic behavior of carbon nanotube‐reinforced polymer nanocomposites: A combined numerical approach and experimental verification

Kassa

Arumugam

2020

Polymer Composites

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In this study, a combined analytical and finite element‐based micromechanical modeling is performed to characterize the elastic properties of carbon nanotube (CNT) reinforced polymer nanocomposites and validated with experimental work. First, coordinates of armchair and zigzag type CNTs are generated using MATLAB based on the geometric structure of the CNTs and imported to the computational software ANSYS to model and characterize the elastic properties of the individual single‐walled CNT (SWCNT) and multi‐walled CNT by applying various loading and boundary conditions. The present developed finite element method (FEM) model of CNTs is validated with the available literature in terms of elastic properties. Subsequently, the equivalent elastic properties of CNT reinforced epoxy nanocomposites are determined through representative volume element (RVE) model by finite element simulations and Mori‐Tanaka homogenization techniques by replacing CNTs with equivalent fibers as microinclusions. The equivalent elastic properties of nanocomposite obtained by the FEM and analytical model are compared and validated with the experimental results. Further, the detailed parametric study is performed to investigate the influence of tube chirality, volume fraction, and orientation of CNT in terms of the elastic properties of the nanocomposite. It was observed that the armchair type CNT reinforced nanocomposites are stiffer than the zigzag type SWCNT reinforced nanocomposites in terms of elastic moduli. Further, it was noticed that the tube chirality and the number of walls of CNTs have significantly influenced the elastic behavior of nanocomposites. It can be concluded that the presented combined model provides an efficient methodology and comprehensive understanding to analyze the elastic behavior of CNTs and CNT reinforced nanocomposites. So, the presented combined numerical and experimental study could serve as a guideline in micromechanical modeling and characterization of elastic behavior of CNT‐reinforced polymer nanocomposites.

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Mechanical Properties Investigation of Defected, Twisted, Elliptic, Bended and Hetero-junction Carbon Nanotubes Based on FEM

Cited by 10 publications

References 26 publications

Mechanical Characterisation of Single-Walled Carbon Nanotube Heterojunctions: Numerical Simulation Study

Mechanical Characterisation of Single-Walled Carbon Nanotube Heterojunctions: Numerical Simulation Study

Numerical Nanomechanics of Perfect and Defective Hetero‐junction CNTs

Micromechanical modeling and characterization of elastic behavior of carbon nanotube‐reinforced polymer nanocomposites: A combined numerical approach and experimental verification

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