On the buckling behavior of connected carbon nanotubes with parallel longitudinal axes

Yengejeh, Sadegh Imani; Zadeh, Mojtaba Akbar; Öchsner, Andreas

doi:10.1007/s00339-013-7999-2

Cited by 26 publications

(18 citation statements)

References 27 publications

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“…The authors concluded that geometric changes reduce the critical load. The buckling behavior of CNTs with junctions was also studied [21,22], where the authors used MD and FEM simulations. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Buckling of single-walled carbon nanotubes with and without defects

Bocko

Lengvarský

2017

J Mech Sci Technol

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This paper studies the buckling behavior of simply-simply supported Single-walled Carbon nanotubes (SWCNTs) with and without defects. The buckling of carbon nanotubes without defects was investigated using the Finite element method (FEM) and analytical treatment and that of carbon nanotubes with defects was studied only by FEM. The carbon nanotubes were modeled as beams and shells. Computations showed that beam elements in the given form provided varying results as shells in their numerical or analytical manner for a small aspect ratio. The defects resulted from the removal of randomly determined carbon atoms and beam elements connected to the nodes. The increasing number of defects decreased the critical buckling force of SWCNTs. The decrease in the critical buckling force was almost the same for SWCNTs with the same diameter but with different chirality.

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Section: Introductionmentioning

confidence: 99%

Buckling of single-walled carbon nanotubes with and without defects

Bocko

Lengvarský

2017

J Mech Sci Technol

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“…Finally, Yengejeh et al [40,41] investigated the buckling and torsional properties of nine straight hetero-junction CNTs by numerical simulation, based on the FEM, and compared them with their fundamental tubes. For such a comparison and evaluation, they simulated straight hetero-junction CNTs with armchair-armchair and zigzag-zigzag connections and then obtained their critical buckling load and shear modulus under cantilever and twisting boundary conditions, respectively.…”

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

confidence: 99%

“…However, the global view from experimental observations clearly demonstrates that hetero-junction CNTs are constructed of two CNTs with different chiralities, which connect together by a kink with pentagon-heptagon cell pairs (also known as Stone-Wales defects) in the bent locations of the connection [34,40] (see Figure 6.2(a)). These kinks, whose existence and size seem to be noticeably effective on the mechanical properties of hetero-junction CNTs, are generally divided into two groups, straight and bent connections, as illustrated in Figure [47] bending angle about 36 ∘ ) [45] and small-angle connections (with bending angle about 12 ∘ ) [31,34].…”

Section: Atomic Geometry and Finite Element Simulation Of Hetero-juncmentioning

confidence: 99%

“…Therefore, the lengths of hetero-junction CNTs are simply calculated by summing up the length of the thinner and wider tubes and the kink part that is expressed by Eqs (6.3) and (6.4) where d is the diameter of the fundamental homogeneous tubes [40], and D d is the difference between the diameters of the wider and thinner fundamental tubes that is expressed by Eq. (6.5).…”

Section: Atomic Geometry and Finite Element Simulation Of Hetero-juncmentioning

confidence: 99%

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Numerical Nanomechanics of Perfect and Defective Hetero‐junction CNTs

Ghavamian

Rahmandoust

Öchsner

2016

Advanced Computational Nanomechanics

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“…Molecular dynamics and continuum mechanics approaches (e.g. the finite element method (FEM)) have been the most common computational techniques to investigate the behavior of CNTs [11]. Due to numerous applications of CNTs in mechanical aspects, the investigation of their buckling behavior is crucially important.…”

Section: Introductionmentioning

confidence: 99%

On the Buckling Behavior of Curved Carbon Nanotubes

Yengejeh

Kazemi

Öchsner

2015

Mechanical and Materials Engineering of Modern Structure and Component Design

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In this study, numerous armchair and zigzag single-walled carbon nanotubes (SWCNTs) were simulated by a commercial finite element package and their buckling behavior was investigated through performing several computational tests with cantilevered boundary conditions and different bending angles. Both computational and analytical results were compared in the case of straight tubes. It was pointed out that the computational results are in good agreement with the analytical calculations. It was also concluded that the first critical buckling load of both straight armchair and zigzag CNTs increases by increasing the chiral number. In addition, it was indicated that the first critical buckling load of straight CNTs decreases by introducing the bending angle to the structure of CNTs. However, this decrease is more noticeable in the case of armchair and zigzag CNTs with higher number of chirality and it is almost negligible for CNTs with lower number of chirality.

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On the buckling behavior of connected carbon nanotubes with parallel longitudinal axes

Cited by 26 publications

References 27 publications

Buckling of single-walled carbon nanotubes with and without defects

Buckling of single-walled carbon nanotubes with and without defects

Numerical Nanomechanics of Perfect and Defective Hetero‐junction CNTs

On the Buckling Behavior of Curved Carbon Nanotubes

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