Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators

We show efficient elastic energy transfer and wave confinement through a graded array of resonators attached to an elastic beam. Experiments demonstrate that flexural resonators of increasing lengths allow to reduce wave scattering and to achieve the rainbow effect with local wavefield amplification...

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Autores principales:	Jacopo Maria De Ponti, Luca Iorio, Emanuele Riva, Francesco Braghin, Alberto Corigliano, Raffaele Ardito
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	metamaterials piezoelectricity energy harvesting resonators rainbow effect Technology T
Acceso en línea:	https://doaj.org/article/04ef921a22bb4163814c16fa19dd3db4
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spelling	oai:doaj.org-article:04ef921a22bb4163814c16fa19dd3db42021-11-05T18:16:59ZEnhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators2296-801610.3389/fmats.2021.745141https://doaj.org/article/04ef921a22bb4163814c16fa19dd3db42021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fmats.2021.745141/fullhttps://doaj.org/toc/2296-8016We show efficient elastic energy transfer and wave confinement through a graded array of resonators attached to an elastic beam. Experiments demonstrate that flexural resonators of increasing lengths allow to reduce wave scattering and to achieve the rainbow effect with local wavefield amplifications. We show that the definition of a monotonically decreasing distribution of the natural frequencies of the resonators along the wave propagation direction, is the preferable choice to increase the energy efficiency of the system. The proposed configuration is suitable for micro-fabrication, envisaging practical applications for micro-scale vibration energy harvesting.Jacopo Maria De PontiLuca IorioEmanuele RivaFrancesco BraghinAlberto CoriglianoRaffaele ArditoFrontiers Media S.A.articlemetamaterialspiezoelectricityenergy harvestingresonatorsrainbow effectTechnologyTENFrontiers in Materials, Vol 8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	metamaterials piezoelectricity energy harvesting resonators rainbow effect Technology T
spellingShingle	metamaterials piezoelectricity energy harvesting resonators rainbow effect Technology T Jacopo Maria De Ponti Luca Iorio Emanuele Riva Francesco Braghin Alberto Corigliano Raffaele Ardito Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators
description	We show efficient elastic energy transfer and wave confinement through a graded array of resonators attached to an elastic beam. Experiments demonstrate that flexural resonators of increasing lengths allow to reduce wave scattering and to achieve the rainbow effect with local wavefield amplifications. We show that the definition of a monotonically decreasing distribution of the natural frequencies of the resonators along the wave propagation direction, is the preferable choice to increase the energy efficiency of the system. The proposed configuration is suitable for micro-fabrication, envisaging practical applications for micro-scale vibration energy harvesting.
format	article
author	Jacopo Maria De Ponti Luca Iorio Emanuele Riva Francesco Braghin Alberto Corigliano Raffaele Ardito
author_facet	Jacopo Maria De Ponti Luca Iorio Emanuele Riva Francesco Braghin Alberto Corigliano Raffaele Ardito
author_sort	Jacopo Maria De Ponti
title	Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators
title_short	Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators
title_full	Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators
title_fullStr	Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators
title_full_unstemmed	Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators
title_sort	enhanced energy harvesting of flexural waves in elastic beams by bending mode of graded resonators
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/04ef921a22bb4163814c16fa19dd3db4
work_keys_str_mv	AT jacopomariadeponti enhancedenergyharvestingofflexuralwavesinelasticbeamsbybendingmodeofgradedresonators AT lucaiorio enhancedenergyharvestingofflexuralwavesinelasticbeamsbybendingmodeofgradedresonators AT emanueleriva enhancedenergyharvestingofflexuralwavesinelasticbeamsbybendingmodeofgradedresonators AT francescobraghin enhancedenergyharvestingofflexuralwavesinelasticbeamsbybendingmodeofgradedresonators AT albertocorigliano enhancedenergyharvestingofflexuralwavesinelasticbeamsbybendingmodeofgradedresonators AT raffaeleardito enhancedenergyharvestingofflexuralwavesinelasticbeamsbybendingmodeofgradedresonators
_version_	1718444080811212800

Enhanced Energy Harvesting of Flexural Waves in Elastic Beams by Bending Mode of Graded Resonators

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