Effects of Higher Order Terms in Aeroodynamic Foroce on the Nonlinear Response of a Galloping PZT Energy Harvester
عنوان مقاله: Effects of Higher Order Terms in Aeroodynamic Foroce on the Nonlinear Response of a Galloping PZT Energy Harvester
شناسه ملی مقاله: ISAV10_030
منتشر شده در دهمین کنفرانس بینالمللی آکوستیک و ارتعاشات در سال 1399
شناسه ملی مقاله: ISAV10_030
منتشر شده در دهمین کنفرانس بینالمللی آکوستیک و ارتعاشات در سال 1399
مشخصات نویسندگان مقاله:
Masoud Rezaei - PhD student, Mechanical Engineering faculty, Iran University of Science and Technonlogy, Narmak, ۱۶۸۴۶-۱۳۱۱۴, Tehran, Iran.
R Talebitooti - Associate Professor, Mechanical Engineering faculty, Iran University of Science and Technonlogy, Narmak, ۱۶۸۴۶-۱۳۱۱۴, Tehran, Iran
خلاصه مقاله:
Masoud Rezaei - PhD student, Mechanical Engineering faculty, Iran University of Science and Technonlogy, Narmak, ۱۶۸۴۶-۱۳۱۱۴, Tehran, Iran.
R Talebitooti - Associate Professor, Mechanical Engineering faculty, Iran University of Science and Technonlogy, Narmak, ۱۶۸۴۶-۱۳۱۱۴, Tehran, Iran
In this paper, the effects of higher order terms in aerodynamic force model are investigated on the response of galloping piezoelectric energy harvesters. The system comprised a PZT beam with a bluff body and exposed to a fluid force. First, the dimensionless governing elec-tromechanical equations are provided. To model the aerodynamic force, the 3rd and 7th order galloping models are used by adopting quasi-steady assumption. Then, the dynamic response based on the 3rd and 7th order aerodynamic force models are studied, using a numerical inte-gration method. Besides, an approximate-analytical solution based on the multiple scales method (MSM) is provided. Next, the mechanical and electrical response of the system are obtained using the MSM solutions. Finally, the optimum electrical power and the correspond-ing dimensionless load resistance is obtained. The results revealed that considering higher order terms in aerodynamic force expansion is necessary for accurate characterization of the mechanical and electrical responses
کلمات کلیدی: PZT energy harvesting; Galloping oscillations; Multiple scales method; Nonline-ar vibrations
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1163349/