کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1786354 1023413 2014 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermo-electro-mechanical vibration of coupled piezoelectric-nanoplate systems under non-uniform voltage distribution embedded in Pasternak elastic medium
ترجمه فارسی عنوان
ارتعاشات ترمو الکترومکانیکی سیستم های پیزوالکتریک-نانولوله های پیوسته تحت توزیع ولتاژ غیر یکنواخت در محیط الاستیک پاسترناک
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی


• Thermo-electro-mechanical vibration of piezoelectric-nanoplate systems.
• The system is subjected to a non-uniform voltage distribution.
• Coupling, upper and lower polymer matrices are simulated using Pasternak model.
• Present work would be helpful for designing NEMS/MEMS using smart nanocomposites.

In the present paper, the thermo-electro-mechanical vibration characteristics of a piezoelectric-nanoplate system (PNPS) embedded in a polymer matrix are investigated. The system is subjected to a non-uniform voltage distribution. The voltage distribution and in-plane preloads are very important in the resonance mode of smart composite nanostructures using PNPS. Small scale effects are taken into consideration using the nonlocal continuum mechanics. Hamilton's principle is employed to derive the nonlocal equations of motion. The governing equations are solved for various boundary conditions by using differential quadrature method (DQM). To verify the accuracy of the present results, a closed-form solution is also derived for the natural frequencies of simply supported PNPSs. The results of DQM are compared with those of exact solution and an excellent agreement is found. Finally, the effects of initial preload, temperature change, boundary conditions, aspect ratio, length-to-thickness ratio, nonlocal and non-uniform parameters on the vibration characteristics of PNPSs are studied. It is shown that the natural frequencies are quite sensitive to the non-uniform and nonlocal parameters.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 14, Issue 5, May 2014, Pages 814–832
نویسندگان
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