Effects of Higher Order Terms in Aeroodynamic Foroce on the Nonlinear Response of a Galloping PZT Energy Harvester
Publish place: 10th International Conference on Acoustics and Vibration
Publish Year: 1399
نوع سند: مقاله کنفرانسی
زبان: English
View: 329
This Paper With 8 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ISAV10_030
تاریخ نمایه سازی: 18 اسفند 1399
Abstract:
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
Keywords:
Authors
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