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  • On the Influence of Atomic Modifications on the Structural Stability of Carbon Nanotube Hybrids: Numerical Investigations

    Author(s)
    Yengejeh, Sadegh Imani
    Kazemi, Seyedeh Alieh
    Oechsner, Andreas
    Griffith University Author(s)
    Oechsner, Andreas
    Imani Yengejeh, Sadegh
    Kazemi, Seyedeh Alieh
    Year published
    2014
    Metadata
    Show full item record
    Abstract
    Connected carbon nanotubes (CNTs) with parallel longitudinal axes and with bending angles were simulated by a commercial finite element package and their buckling behavior was investigated by performing several computational examinations. In addition, the effect of defects on the structural stability of these heterojunctions was analyzed. For this purpose, two different nanotube hybrids (straight and kink heterojunction) were constructed in their perfect forms. In the second phase, three most likely atomic defects, i.e., impurities (doping with Si atoms), vacant sites (carbon vacancy) and introduced perturbations of the ideal ...
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    Connected carbon nanotubes (CNTs) with parallel longitudinal axes and with bending angles were simulated by a commercial finite element package and their buckling behavior was investigated by performing several computational examinations. In addition, the effect of defects on the structural stability of these heterojunctions was analyzed. For this purpose, two different nanotube hybrids (straight and kink heterojunction) were constructed in their perfect forms. In the second phase, three most likely atomic defects, i.e., impurities (doping with Si atoms), vacant sites (carbon vacancy) and introduced perturbations of the ideal geometry in different amounts to the perfect models, were simulated. To conclude our study, the buckling behavior of imperfect heterojunctions was numerically evaluated and compared with the behavior of the perfect ones. It was concluded that the existence of any type of defects in the configuration of nanotube hybrids leads to a lower critical load and as a result, lower buckling properties. This study provides a better insight into the prediction of straight and kink heterojunction CNTs behavior.
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    Journal Title
    International Journal of Applied Mechanics
    Volume
    6
    Issue
    6
    DOI
    https://doi.org/10.1142/S175882511450077X
    Subject
    Civil engineering
    Mechanical engineering
    Numerical modelling and mechanical characterisation
    Publication URI
    http://hdl.handle.net/10072/66388
    Collection
    • Journal articles

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