Multi-Objective Topology Optimization of a Broadband Piezoelectric Energy Harvester
Abstract
:1. Introduction
2. Definition and Modeling of Multi-Modal Piezoelectric Energy Harvester
2.1. Finite Element Modeling of Piezoelectric Energy Harvester
2.2. Folded-Beam Resonator
3. Topology Optimization Procedure
3.1. Objective Function and Sensitivity Analysis
3.2. Filters
3.2.1. Density Filter
3.2.2. Threshold Projection
4. Optimization Results
5. Discussion
6. Conclusions and Outlook
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
Abbreviations
PEH | Piezoelectric Energy Harvester |
TO | Topology Optimization |
Appendix A
Appendix B
References
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Density (kg/m) | Piezoelectric Constants (C/m) | ||
---|---|---|---|
4700 | −2.227 | ||
Young’s Modulus (GPa) | −0.671 | ||
45.21 | 16.665 | ||
12.39 | 0.0258 | ||
40.44 | 13.668 | ||
Shear Modulus (GPa) | Dielectric Relative Constants | ||
6.03 | 1574.8 | ||
6.68 | 24.7 | ||
17.01 | 1528.7 | ||
Poisson’s Ratio | |||
0.39 | |||
0.17 | |||
0.44 |
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Hu, S.; Fitzer, U.; Nguyen, K.C.; Hohlfeld, D.; Korvink, J.G.; Bechtold, T. Multi-Objective Topology Optimization of a Broadband Piezoelectric Energy Harvester. Micromachines 2023, 14, 332. https://doi.org/10.3390/mi14020332
Hu S, Fitzer U, Nguyen KC, Hohlfeld D, Korvink JG, Bechtold T. Multi-Objective Topology Optimization of a Broadband Piezoelectric Energy Harvester. Micromachines. 2023; 14(2):332. https://doi.org/10.3390/mi14020332
Chicago/Turabian StyleHu, Siyang, Ulrike Fitzer, Khai Chau Nguyen, Dennis Hohlfeld, Jan G. Korvink, and Tamara Bechtold. 2023. "Multi-Objective Topology Optimization of a Broadband Piezoelectric Energy Harvester" Micromachines 14, no. 2: 332. https://doi.org/10.3390/mi14020332