Optimization and Validation of Piezoelectric Cantilever Designs for Energy Harvesting from Bridge Vibrations
Autor(en): |
Lukai Guo
Hao Wang |
---|---|
Medium: | Fachartikel |
Sprache(n): | Englisch |
Veröffentlicht in: | Transportation Research Record: Journal of the Transportation Research Board, 30 Juni 2023, n. 2, v. 2678 |
Seite(n): | 251-265 |
DOI: | 10.1177/03611981231173633 |
Abstrakt: |
This study proposes an optimization strategy for bridge applications with a vibration-based energy harvester design. Piezoelectric cantilevers with multiple degrees of freedom (DOF) are designed and optimized to match resonant frequencies with the vibration frequencies of a full-scale bridge structure under different loading conditions and measurement locations. The specific optimization procedures include bridge vibration acceleration measurement, simulation model development for estimating the resonant frequencies, a regression model for optimization of mass combinations, and final installation on the full-scale bridge for validation. The results show that the simulation model predicted the resonant frequencies of cantilevers with less than 1 Hz difference compared with laboratory measurements. Following the entire optimization procedures proposed in this study, the optimized 2-DOF and 3-DOF cantilevers were capable of generating 18.9 [Formula: see text] J and 23.4 [Formula: see text] J energy under one loading pass, respectively, which were significantly higher than those from the baseline designs. The feasibility of the proposed optimization strategy was demonstrated and validated for vibration-based energy harvesting from bridge structures. |
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10777845 - Veröffentlicht am:
12.05.2024 - Geändert am:
12.05.2024