Design and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvesting
Aiming toward improved energy conversion in piezoelectric energy harvesters, this study investigates four-point bending (FPB) energy harvesters (FPB-EH) to explore their prominent features and characteristics. The FPB configuration innovatively extends energy harvesting capabilities relative to conv...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2023
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| _version_ | 1826310992148037632 |
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| author | Hasani, M Khazaee, M Huber, JE Rosendahl, L Rezania, A |
| author_facet | Hasani, M Khazaee, M Huber, JE Rosendahl, L Rezania, A |
| author_sort | Hasani, M |
| collection | OXFORD |
| description | Aiming toward improved energy conversion in piezoelectric energy harvesters, this study investigates four-point bending (FPB) energy harvesters (FPB-EH) to explore their prominent features and characteristics. The FPB configuration innovatively extends energy harvesting capabilities relative to conventional cantilever beams. The FPB-EH comprises a composite piezoelectric beam that rests on two supports of a fixed clamp, excited by contact force applied at two contact lines on a moving clamp. A comprehensive analytical electromechanical model for the vibrating energy harvester is presented with unique modeling features, including multi-beam sections and multi-mode-shape functions. Solutions of the analytical model are presented for a wide range of contact force types, including steady-state solutions for harmonic forces, impact forces, periodic and non-periodic arbitrary forces. This comprehensive model progresses the state-of-the-art piezoelectric modeling knowledge and is readily applicable to various energy harvesting configurations. The model is validated against experimental results and finite element analysis. Next, a parametric study was performed to evaluate the effects of various FPB characteristics, including the fixed and moving clamp spans, the waveform, and the period-time of contact force. The results indicate that the FPB configuration can enhance energy conversion efficiency and normalized output energy by factors of over 3 and 6, respectively. Finally, guidance is given for selecting between cantilever and four-point bending configurations. |
| first_indexed | 2024-03-07T08:01:49Z |
| format | Journal article |
| id | oxford-uuid:41a30397-5a63-4873-bdd5-4a1dddea81b0 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:01:49Z |
| publishDate | 2023 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:41a30397-5a63-4873-bdd5-4a1dddea81b02023-10-03T15:53:26ZDesign and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvestingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:41a30397-5a63-4873-bdd5-4a1dddea81b0EnglishSymplectic ElementsElsevier2023Hasani, MKhazaee, MHuber, JERosendahl, LRezania, AAiming toward improved energy conversion in piezoelectric energy harvesters, this study investigates four-point bending (FPB) energy harvesters (FPB-EH) to explore their prominent features and characteristics. The FPB configuration innovatively extends energy harvesting capabilities relative to conventional cantilever beams. The FPB-EH comprises a composite piezoelectric beam that rests on two supports of a fixed clamp, excited by contact force applied at two contact lines on a moving clamp. A comprehensive analytical electromechanical model for the vibrating energy harvester is presented with unique modeling features, including multi-beam sections and multi-mode-shape functions. Solutions of the analytical model are presented for a wide range of contact force types, including steady-state solutions for harmonic forces, impact forces, periodic and non-periodic arbitrary forces. This comprehensive model progresses the state-of-the-art piezoelectric modeling knowledge and is readily applicable to various energy harvesting configurations. The model is validated against experimental results and finite element analysis. Next, a parametric study was performed to evaluate the effects of various FPB characteristics, including the fixed and moving clamp spans, the waveform, and the period-time of contact force. The results indicate that the FPB configuration can enhance energy conversion efficiency and normalized output energy by factors of over 3 and 6, respectively. Finally, guidance is given for selecting between cantilever and four-point bending configurations. |
| spellingShingle | Hasani, M Khazaee, M Huber, JE Rosendahl, L Rezania, A Design and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvesting |
| title | Design and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvesting |
| title_full | Design and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvesting |
| title_fullStr | Design and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvesting |
| title_full_unstemmed | Design and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvesting |
| title_short | Design and analytical evaluation of an impact-based four-point bending configuration for piezoelectric energy harvesting |
| title_sort | design and analytical evaluation of an impact based four point bending configuration for piezoelectric energy harvesting |
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