کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1562465 999588 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Frequency analysis of perfect and defective SWCNTs
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Frequency analysis of perfect and defective SWCNTs
چکیده انگلیسی

This paper develops a structural mechanical model that analyzes the natural frequency of single-walled carbon nanotubes (SWCNTs) subjected to fixed–fixed and free–fixed boundary conditions. A Morse potential is employed for stretching and bending potentials, and a periodic type of bond torsion is used for torsion interactions. The natural frequencies for various aspect ratios are predicted by this structural model. The effect of different vacancy and Stone–Wales defects on the natural frequency of zigzag and armchair nanotubes is also investigated. Finally, the results of the present structural model are compared with those from other numerical methods.


► We model carbon nanotubes using a structural mechanics approach.
► We investigate the effects of the type of defects on the natural frequencies.
► The effect of defects on the natural frequencies will decrease with increasing length.
► The critical points of the defects on SWCNTs depend on their mode shapes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 50, Issue 7, May 2011, Pages 2051–2056
نویسندگان
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