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EnglishFilms of electret material are currently used to cover the surface of electrodes of some vibration capacitive harvesters based on deformable beams, clamped at both ends. Nevertheless, performance of this device is often predicted through some simplified electromechanical model, which neglects the effect of geometric nonlinearity due to a mechanical coupling between the axial and flexural behaviors of the clamped beam. Stiffening of beam and nonlinear behaviour in dynamics is herein investigated, by resorting to a distributed model of the electromechanical copuling of the vibration harvester, based on the Finite Element Method. Influence upon the performance of the energy conversion is then analyzed and an optimization of the configuration is proposed.
Influence of the structural non–linearity on the performance o fan electret–based vibration energy harvester / E.BRUSA; M. MUNTEANU. - CD-ROM. - 1(2015), pp. 1-18. ((Intervento presentato al convegno 7th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2015 tenutosi a Ponta Delgada, Azores, Portugal nel June 3–6, 2015.
| Titolo: | Influence of the structural non–linearity on the performance o fan electret–based vibration energy harvester | |
| Autori: | ||
| Data di pubblicazione: | 2015 | |
| Abstract: | Films of electret material are currently used to cover the surface of electrodes of some vibratio...n capacitive harvesters based on deformable beams, clamped at both ends. Nevertheless, performance of this device is often predicted through some simplified electromechanical model, which neglects the effect of geometric nonlinearity due to a mechanical coupling between the axial and flexural behaviors of the clamped beam. Stiffening of beam and nonlinear behaviour in dynamics is herein investigated, by resorting to a distributed model of the electromechanical copuling of the vibration harvester, based on the Finite Element Method. Influence upon the performance of the energy conversion is then analyzed and an optimization of the configuration is proposed. | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| SMART2015_033.pdf | Articolo principale | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11583/2594162
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