کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1562185 999581 2011 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear vibration of nanotube-reinforced composite plates in thermal environments
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Nonlinear vibration of nanotube-reinforced composite plates in thermal environments
چکیده انگلیسی

This paper deals with the large amplitude vibration of nanocomposite plates reinforced by single-walled carbon nanotubes (SWCNTs) resting on an elastic foundation in thermal environments. The SWCNTs are assumed aligned, straight and a uniform layout. Two kinds of carbon nanotube-reinforced composite (CNTRC) plates, namely, uniformly distributed (UD) and functionally graded (FG) reinforcements, are considered. The material properties of FG-CNTRC plates are assumed to be graded in the thickness direction, and are estimated through a micromechanical model. The motion equations are based on a higher-order shear deformation plate theory that includes plate-foundation interaction. The thermal effects are also included and the material properties of CNTRCs are assumed to be temperature-dependent. The equations of motion are solved by an improved perturbation technique to determine nonlinear frequencies of CNTRC plates. Numerical results reveal that the natural frequencies as well as the nonlinear to linear frequency ratios are increased by increasing the CNT volume fraction. The results also show that the natural frequencies are reduced but the nonlinear to linear frequency ratios are increased by increasing the temperature rise or by decreasing the foundation stiffness. The results confirm that a functionally graded reinforcement has a significant effect on the nonlinear vibration characteristics of CNTRC plates.


► We propose a multi-scale model for nonlinear vibration of CNTRC plates.
► Functionally graded reinforcement affects vibration characteristics significantly.
► Increasing the CNT volume fraction will increase natural frequencies.
► Increasing the CNT volume fraction will increase nonlinear vibration frequencies.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 50, Issue 8, June 2011, Pages 2319–2330
نویسندگان
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