Studies on vibration response and energy harvesting of elastic-supported bistable piezoelectric cantilever beams | Zendy

Yuji Gao | Zendy; Yonggang Leng | Zendy; Fan Sheng-Bo | Zendy; Lai Zhi-Hui | Zendy

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Studies on vibration response and energy harvesting of elastic-supported bistable piezoelectric cantilever beams

Author(s) -

Yuji Gao,

Yonggang Leng,

Fan Sheng-Bo,

Lai Zhi-Hui

Publication year - 2014

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.63.090501

Subject(s) - bistability , cantilever , energy harvesting , excitation , vibration , magnet , nonlinear system , oscillation (cell signaling) , intensity (physics) , piezoelectricity , energy (signal processing) , materials science , elastic energy , acoustics , physics , optics , optoelectronics , quantum mechanics , biology , composite material , genetics

Based on the results of study on conventional rigid support nonlinear energy harvesters, in this paper, we conceive a kind of structure with an elastic-supported external magnet, for keeping the system in a state of bistable oscillation due to low-intensity excitations. Thus, an efficient electromechanical energy conversion can be accomplished. Studies show that the elastic-supported nonlinear energy harvesting systems do not need real-time adjustment of magnet spacings to meet varying-intensity random excitation vibrations. This structure helps to better satisfy the variable-intensity random excitation source, consequently it achieves efficiently electromechanical energy conversion.

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