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  • Influence of structural imperfections—twisting and distortion—on the vibrational behavior of carbon nanotubes

    Author(s)
    Yengejeh, Sadegh Imani
    Oechsner, Andreas
    Griffith University Author(s)
    Oechsner, Andreas
    Imani Yengejeh, Sadegh
    Year published
    2015
    Metadata
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    Abstract
    Several types of carbon nanotubes in their perfect and imperfect form were simulated, and their vibrational behavior was studied by performing computational examinations with fixed-free boundary conditions. Both computational and analytical results were compared in the case of perfect tubes. Afterward, three kinds of imperfections, that is, twisting angle, z-distortion along the longitudinal axis and xy-distortion along the radial axis, were introduced to the structure of perfect carbon nanotubes, and the natural frequencies of imperfect carbon nanotubes were numerically evaluated and compared with the behavior of the perfect ...
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    Several types of carbon nanotubes in their perfect and imperfect form were simulated, and their vibrational behavior was studied by performing computational examinations with fixed-free boundary conditions. Both computational and analytical results were compared in the case of perfect tubes. Afterward, three kinds of imperfections, that is, twisting angle, z-distortion along the longitudinal axis and xy-distortion along the radial axis, were introduced to the structure of perfect carbon nanotubes, and the natural frequencies of imperfect carbon nanotubes were numerically evaluated and compared with the behavior of the perfect ones. It was concluded that the existence of any type of imperfection in the structure of carbon nanotubes leads to a lower natural frequency and, as a result, lower vibrational stability. However, this trend was more visible for the carbon nanotubes with higher chirality.
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    Journal Title
    Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanoengineering and Nanosystems
    DOI
    https://doi.org/10.1177/1740349915579713
    Subject
    Numerical Modelling and Mechanical Characterisation
    Publication URI
    http://hdl.handle.net/10072/171038
    Collection
    • Journal articles

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