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Design of a 3D
braided multi-mode piezoelectric energy harvester and
electromechanical coupling analysis
Zuwei Bi, Gaofeng Wei, Ming Song, Anqing Li and Fei Ren |
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Vol. 20 (2025), No. 4, 415–436
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Abstract |
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To achieve multiple closely spaced natural frequencies in the low-frequency range of piezoelectric energy harvester, a novel three-dimensional braided multi-modal piezoelectric energy harvester (BMPEH) is proposed. The 3D BMPEH is composed of a main beam with piezoelectric layers and multiple branch beams equipped with tip masses. The main beam and the branch beams are employed as the elastic layers, and are made of 3D braided composites with excellent mechanical properties and good design flexibility. The theoretical model of the 3D BMPEH under transverse excitation is established, and the electromechanical coupling equation is derived. The effects of design parameters, including braided angle, tip mass, load resistance, and excitation amplitude, on the output response are examined. Numerical simulations demonstrate that the 3D BMPEH broadens the bandwidth of frequency response in the lower frequency range and shows great potential for powering electronic equipment. |
Keywords
multimode, low-frequency, 3D braided composite,
piezoelectric energy harvesting, electromechanical coupling
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Milestones
Received: 20 June 2025
Revised: 17 August 2025
Accepted: 2 September 2025
Published: 12 October 2025
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Authors |
| Zuwei Bi | |
| Qilu University of Technology –
Shandong Academy of Sciences Jinan, 250353 China |
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| Gaofeng Wei | |
| Qilu University of Technology –
Shandong Academy of Sciences Jinan, 250353 China |
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| Ming Song | |
| Qilu University of Technology –
Shandong Academy of Sciences Jinan, 250353 China |
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| Anqing Li | |
| Qilu University of Technology –
Shandong Academy of Sciences Jinan, 250353 China |
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| Fei Ren | |
| Qilu University of Technology –
Shandong Academy of Sciences Jinan, 250353 China |
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| © 2025 MSP (Mathematical Sciences Publishers). |
