Investigation of the Mechanical Properties of Armchair Coiled Carbon Nanotubes Using Molecular Structural Mechanics Approach
Publish place: 20th Annual Conference of Mechanical Engineering
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME20_289
تاریخ نمایه سازی: 18 تیر 1391
Abstract:
This paper investigates mechanical properties of armchair coiled carbon nanotubes by means of molecular structural mechanics method, whereby atomic interactions can be modeled using beam elements. To specify the geometry of coiled carbon nanotubes, a construction procedure is proposed which offers a full control over the morphology of the coiled nanotubes. This construction approach consists of three steps. First a development map is drawn on a graphene sheet, and then this graphene sheet is rolled to form a defected straight carbon nanotube; finally, the sides of these defects are stuck together through a nonlinear analysis, with the result that the straight carbon nanotube forms into coiled carbon nanotube. Accordingly, several coiled nanotubes are built and their spring constants are calculated. It is shown that the spring constants foundare in good agreement with those obtained from density function theory and tight-binding calculations reported in the literature. The results also reveal that, as the tube diameter increases, spring constant of the coiled carbon nanotube increases, constantly
Keywords:
Single-walled helically coiled CNT , Helical nanospring , Molecular structural mechanics , Spring constant
Authors
Seyed Hadi GHADERI
Department of Mechanical Engineering, Shahrood University of Technology
Ehsan HAJIESMAILI
Department of Mechanical Engineering, Shahrood University of Technology
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