Nonlinear Vibration Analysis of Embedded Multiwalled Carbon Nanotubes in Thermal Environment
الموضوعات : فصلنامه شبیه سازی و تحلیل تکنولوژی های نوین در مهندسی مکانیک
رضا انصاری
1
(استادیار، دانشکده مکانیک، دانشگاه گیلان)
حبیب رمضان نژاد آزاربنی
2
(کارشناس ارشد، دانشکده مکانیک، دانشگاه گیلان.)
الکلمات المفتاحية: Carbon nanotubes, van der Waals (vdW) interlayer force, Incremental harmonic balance, Nonlinear frequency,
ملخص المقالة :
In this article, based on the Euler-Bernoulli beam theory, the large-amplitude vibration of multiwalled carbon nanotubes embedded in an elastic medium is investigated. The method of incremental harmonic balance is implemented to solve the set of governing nonlinear equations coupled via the van der Waals (vdW) interlayer force. The influences of number of tube walls, the elastic medium, nanotube aspect ratio and temperature rise on nonlinear frequency are fully examined. The results obtained for single-walled, double-walled and triple-walled carbon nanotubes indicate that with increasing the number of tube walls, coefficient of the surrounding elastic medium, tube aspect ratio and temperature nonlinear frequency tend to the linear counterpart.
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