Multi-frequency piezomagnetoelastic energy harvesting in the monostable mode
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
View: 552
This Paper With 18 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_TAVA-4-1_001
تاریخ نمایه سازی: 30 دی 1397
Abstract:
The present article investigates effects of the multi-frequency excitation on the output power of a piezomagnetoelastic energyharvester. The piezomagnetoelastic power generator is assumed to operate in the mono-stable mode. A perturbation technique based onthe method of multiple scales is employed to develop an analytical solution to nonlinear differential equations governing the systemdynamics. In addition, a Runge-Kutta numerical scheme is used to solve the differential equations. It is shown that the perturbation solution is in a close agreement with the numerical solution. The system response is determined for several cases including super-harmonic, combination and simultaneous resonances. The steady-state output voltage is then obtained for each case and compared with that of a single-frequency excitation. Due to nonlinearities present in the system, a multi-frequency excitation gives rise to complicated phenomena such as combination and simultaneous resonances. It is found out that exploiting these resonances can significantly increase the amount of energy harvested
Keywords:
Authors
Amin Yousefpour
MSc. Student, School of Mechanical Engineering, University of Tehran, Tehran, Iran
Arash Bahrami
Assistant professor, School of Mechanical Engineering, University of Tehran, Tehran, Iran
Mohammad Reza Haeri Yazdi
Professor, School of Mechanical Engineering, University of Tehran, Tehran, Iran