کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5022626 | 1469949 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On non-linear vibrations of flexoelectric nanobeams
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this article, non-linear vibration problem of flexoelectric nanobeams with surface and thermal effects is investigated. Flexolectricity in piezoelectric nanobeams can be interpreted as the strain gradient-electrical polarization coupling. There are two flexoelectric mechanisms which are direct and converse flexoelectricity. An electric voltage is applied to the top surface of the nanobeam which introduces a closed-circuit electric field condition. Employing He's variational method, the nonlinear governing equation of flexolectric nanobeam is solved and nonlinear frequencies are obtained. The flexielectricity effect is less important for large scale beams, therefore it has a great influence on vibration behavior of piezoelectric nanobeams. Also, the effects of several parameters including temperature change, elastic foundation, surface coefficients and nanobeam thickness on nonlinear frequency are investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Engineering Science - Volume 121, December 2017, Pages 143-153
Journal: International Journal of Engineering Science - Volume 121, December 2017, Pages 143-153
نویسندگان
Mohammad Reza Barati,