High performance piezoelectric energy harvester with dual-coupling beams and bistable configurations
Artykuł w czasopiśmie
MNiSW
200
Lista 2023
| Status: | |
| Autorzy: | Chen Kunming, Zhang Xiao, Xiang Xiaoyi, Shen Hui, Yang Qian, Wang Junlei, Litak Grzegorz |
| Dyscypliny: | |
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| Rok wydania: | 2023 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 561 |
| Numer artykułu: | 117822 |
| Strony: | 1 - 19 |
| Impact Factor: | 4,3 |
| Web of Science® Times Cited: | 14 |
| Scopus® Cytowania: | 16 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | This work was supported by National Natural Science Foundation of China (Grant Numbers 51975303, 51977196 and 52277227). This research was also supported in the framework of the project Lublin University of Technology–Regional Excellence Initiative, funded by the Polish Ministry of Science and Higher Education (contract no. 030/RID/2018/19). |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| To enhance the broadband performance of the bistable energy harvester under low-level vibra- tions, this paper proposes a piezoelectric nonlinear energy harvester with dual-coupling beams. The proposed device is composed of a linear energy harvester and a bistable nonlinear energy harvester which are elastically connected by a linear spring. The electromechanical model of the proposed harvester is established while the nonlinear restoring force is measured in the experiment. Numerical simulations and experiments are performed for the proposed harvester with various coupling stiffness springs. Since the additional linear oscillator and the coupling spring not only could give the bistable oscillator disturbance at the beginning or during the vibrations, but also can lower the barrier height, numerical and experimental results both show that the proposed harvester can pass through potential wells easier under lower excitation. Compared with a traditional bistable energy harvester, the excitation level acquired for high-energy inter- well oscillation is decreased by 56.4% (from 5.5 m/s2 to 2.4 m/s2). The best energy harvesting performance is achieved in the transition region of monostable-to-bistable when the stiffness of the coupling spring is 40 N/m, and the operating bandwidth is increased by 70%. The generated RMS power and the harvested power are increased by 17% and 29%, respectively (under the same excitation of 5.5 m/s2). In addition, the optimal coupling spring stiffness under different restoring forces (potential well depths) is also analyzed in the simulation. |
