An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams
The piezoelectric energy harvester efficiency depends on optimizing the cantilever geometry and tuning its natural frequency with vibration source frequency. Moreover, the effect of harvester parameters on natural frequency is vital in tuning the resonance frequency. So, a COMSOL Multi-physics finit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-02-01
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| Series: | Alexandria Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110016820306062 |
| _version_ | 1818656707803348992 |
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| author | Khaled Mohamed Hassan Elgamal Sallam A. Kouritem |
| author_facet | Khaled Mohamed Hassan Elgamal Sallam A. Kouritem |
| author_sort | Khaled Mohamed |
| collection | DOAJ |
| description | The piezoelectric energy harvester efficiency depends on optimizing the cantilever geometry and tuning its natural frequency with vibration source frequency. Moreover, the effect of harvester parameters on natural frequency is vital in tuning the resonance frequency. So, a COMSOL Multi-physics finite element analysis, Eigen frequency study and analytical analysis using MATLAB were constructed to calculate the resonance frequencies and to analyze the harvester parameters effect. Five harvester different shapes, namely, the T-shaped, rectangular, L-shaped, variable width, and triangular cantilevers were optimized using the genetic algorithm. The simulation of the five shapes was implemented using COMSOL. The results indicated that the T- shaped cantilever produced the largest power. Due to its high power and inclusive shape, the T-shaped cantilever with variable width was optimized using the COMSOL optimization module (BOBYQA). Linking genetic algorithm and COMSOL optimization module has highly improved the output power. The COMSOL results were validated using an experimental setup of piezoelectric cantilevers. The experimental setup was employed to calculate the voltage of the base excited harvester with very low excitation frequencies from 0.5 to 10 Hz. Also, the experimental setup investigated the effect of the tip mass, length of the cantilever, and piezoelectric material volume on the output voltage. |
| first_indexed | 2024-12-17T03:29:52Z |
| format | Article |
| id | doaj.art-eee79bae4b234cdf80d8b5cfe56b28a9 |
| institution | Directory Open Access Journal |
| issn | 1110-0168 |
| language | English |
| last_indexed | 2024-12-17T03:29:52Z |
| publishDate | 2021-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj.art-eee79bae4b234cdf80d8b5cfe56b28a92022-12-21T22:05:18ZengElsevierAlexandria Engineering Journal1110-01682021-02-0160117511766An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beamsKhaled Mohamed0Hassan Elgamal1Sallam A. Kouritem2Corresponding author.; Mechanical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, EgyptMechanical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, EgyptMechanical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, EgyptThe piezoelectric energy harvester efficiency depends on optimizing the cantilever geometry and tuning its natural frequency with vibration source frequency. Moreover, the effect of harvester parameters on natural frequency is vital in tuning the resonance frequency. So, a COMSOL Multi-physics finite element analysis, Eigen frequency study and analytical analysis using MATLAB were constructed to calculate the resonance frequencies and to analyze the harvester parameters effect. Five harvester different shapes, namely, the T-shaped, rectangular, L-shaped, variable width, and triangular cantilevers were optimized using the genetic algorithm. The simulation of the five shapes was implemented using COMSOL. The results indicated that the T- shaped cantilever produced the largest power. Due to its high power and inclusive shape, the T-shaped cantilever with variable width was optimized using the COMSOL optimization module (BOBYQA). Linking genetic algorithm and COMSOL optimization module has highly improved the output power. The COMSOL results were validated using an experimental setup of piezoelectric cantilevers. The experimental setup was employed to calculate the voltage of the base excited harvester with very low excitation frequencies from 0.5 to 10 Hz. Also, the experimental setup investigated the effect of the tip mass, length of the cantilever, and piezoelectric material volume on the output voltage.http://www.sciencedirect.com/science/article/pii/S1110016820306062Piezoelectric cantilever beamEnergy harvestingShape optimizationCOMSOL optimization moduleExperimental setup |
| spellingShingle | Khaled Mohamed Hassan Elgamal Sallam A. Kouritem An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams Alexandria Engineering Journal Piezoelectric cantilever beam Energy harvesting Shape optimization COMSOL optimization module Experimental setup |
| title | An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams |
| title_full | An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams |
| title_fullStr | An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams |
| title_full_unstemmed | An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams |
| title_short | An experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams |
| title_sort | experimental validation of a new shape optimization technique for piezoelectric harvesting cantilever beams |
| topic | Piezoelectric cantilever beam Energy harvesting Shape optimization COMSOL optimization module Experimental setup |
| url | http://www.sciencedirect.com/science/article/pii/S1110016820306062 |
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