Finite Element Modeling and Performance Evaluation of Piezoelectric Energy Harvesters with Various Piezoelectric Unit Distributions

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dc.contributor.authorDu, Congen
dc.contributor.authorLiu, Pengfeien
dc.contributor.authorYang, Hailuen
dc.contributor.authorJiang, Gengfuen
dc.contributor.authorWang, Linbingen
dc.contributor.authorOeser, Markusen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessioned2021-03-30T12:39:31Zen
dc.date.available2021-03-30T12:39:31Zen
dc.date.issued2021-03-14en
dc.date.updated2021-03-26T14:06:08Zen
dc.description.abstractThe piezoelectric energy harvester (PEH) is a device for recycling wasted mechanical energy from pavements. To evaluate energy collecting efficiency of PEHs with various piezoelectric unit distributions, finite element (FE) models of the PEHs were developed in this study. The PEH was a square of 30 cm × 30 cm with 7 cm in thickness, which was designed according to the contact area between tire and pavement. Within the PEHs, piezoelectric ceramics (PZT-5H) were used as the core piezoelectric units in the PEHs. A total of three distributions of the piezoelectric units were considered, which were 3 × 3, 3 × 4, and 4 × 4, respectively. For each distribution, two diameters of the piezoelectric units were considered to investigate the influence of the cross section area. The electrical potential, total electrical energy and maximum von Mises stress were compared based on the computational results. Due to the non-uniformity of the stress distribution in PEHs, more electrical energy can be generated by more distributions and smaller diameters of the piezoelectric units; meanwhile, more piezoelectric unit distributions cause a higher electrical potential difference between the edge and center positions. For the same distribution, the piezoelectric units with smaller diameter produce higher electrical potential and energy, but also induce higher stress concentration in the piezoelectric units near the edge.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationDu, C.; Liu, P.; Yang, H.; Jiang, G.; Wang, L.; Oeser, M. Finite Element Modeling and Performance Evaluation of Piezoelectric Energy Harvesters with Various Piezoelectric Unit Distributions. Materials 2021, 14, 1405.en
dc.identifier.doihttps://doi.org/10.3390/ma14061405en
dc.identifier.urihttp://hdl.handle.net/10919/102877en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectpiezoelectric energy harvesteren
dc.subjectfinite element simulationen
dc.subjectpiezoelectric unit distributionsen
dc.subjectelectrical potential and energyen
dc.subjectvon Mises stressen
dc.titleFinite Element Modeling and Performance Evaluation of Piezoelectric Energy Harvesters with Various Piezoelectric Unit Distributionsen
dc.title.serialMaterialsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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