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  • 1393 14 15 96-102

    mme.modares.ac.ir

    :Pleasecitethisarticleusing:M.R.Asgharzadeh,K.Jahani,A.Kianpoor,M.H.Sadeghi,EnergyHarvestingInvestigationfromUnimorphTrapezoidalBeamVibrationsusingDistributedParametersMethod,ModaresMechanicalEngineering,Vol.14,No.15,pp.96-102,2015(InPersian)

    1 2* 3 4

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    * [email protected]

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    EnergyHarvestingInvestigationfromUnimorphTrapezoidalBeamVibrationsusingDistributedParametersMethod

    MohammadrezaAsgharzadeh1,KamalJahani2*,ArmanKianpoor3,MortezaHomayounSadeghi41-DepartmentofAerospaceEngineering,UniversityofTabriz,Tabriz,Iran.2-DepartmentofAerospaceEngineering,UniversityofTabriz,Tabriz,Iran3-DepartmentofMechanicalEngineering,UniversityofTabriz,Tabriz,Iran4-DepartmentofMechanicalEngineering,UniversityofTabriz,Tabriz,Iran*P.O.B.51665-315Tabriz,Iran,[email protected] ABSTRACTOriginalResearchPaperReceived22July2014Accepted26August2014AvailableOnline20October2014

    Inrecentyears,theneedforlowpowerelectroniccircuitslikesensorsandwirelesssystemshasbeenconsideredbymanyresearchers.Excessiveweight,limitedlifetimeofthebatteriesandalsothe problem of replacing them, are the main reasons for harvesting energy from ambientvibrations. Among the various sources of environmental energy, mechanical vibrations havegainedinpopularityduetotheiravailability.Betweenthedifferentmethodsofambientvibrationenergy harvesting,piezoelectric method, isoneof thegoodways to harvest energydue to thefavorableeffectsofelectromechanicalcoupling.Themostcommonmeansofharvestingenergyfrom vibrations is a cantilevered beam with one or more piezoelectric layers. In the presentpaper,electricalenergyharvestingfromEuler-Bernoullitrapezoidalcantileveredunimorphbeamwithbaseexcitationusingdistributedparametermethodhasbeenconsidered.First,equationsofmotionareanalyticallyobtainedandthenusingAssumedmodesmethod(forrectangularbeam),systemsnaturalfrequenciesarecalculatedandoutputvoltage,currentandpowerdiagramsarepresented. For verifying results, presented voltage, current and power output diagrams fortrapezoidalconfigurationclosetorectangularconfiguration,theresultsofwhicharepublishedinreferences,willbecompared.Then,functionalparametersfortrapezoidalenergyharvesterwithresistancevaluechangesforenergyconsumerhavebeenanalyzed.

    Keywords:EnergyharvestingPiezoelectricVibrationsTrapezoidalbeamDistributedParametersMethod

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    7-[1] M.C.Hamilton,Recent advances in energy harvesting technology andtechniques,inProceedingof,6297-6304.[2] H. Kim, J.-H. Kim, J. Kim, A review of piezoelectric energy harvestingbased on vibration, International Journal ofPrecisionEngineering andManufacturing,Vol.12,No.6,pp.1129-1141,2011/12/01,2011.English[3] IEEE Standard on Piezoelectricity, ANSI/IEEE Std 176-1987, pp. 0_1, 1988.[4] U. Mikio, N. Kentaro, U. Sadayuki, Analysis of the Transformation of Mechanical Impact Energy to Electric Energy Using Piezoelectric Vibrator, Japanese JournalofAppliedPhysics,Vol.35,No.5S,pp.3267, 1996.[5] C.B.Williams,R.B.Yates,AnalysisOf AMicro-electricGeneratorFor Microsystems,inProceedingof,369-372.[6] S.Roundy,E.S.Leland,J.Baker,E.Carleton,E.Reilly,E.Lai,B.Otis,J.M. Rabaey, P. K. Wright, V. Sundararajan, Improving power output for vibration-basedenergyscavengers,PervasiveComputing,IEEE,Vol.4,No.1,pp.28-36,2005.[7] J. Ajitsaria, S. Y. Choe, D. Shen, D. J. Kim, Modeling and analysis of abimorph piezoelectric cantilever beam for voltage generation, Smart MaterialsandStructures,Vol.16,No.2,pp.447,2007.[8] A.Erturk,D. J. Inman,An experimentallyvalidatedbimorphcantilever model forpiezoelectricenergyharvesting frombaseexcitations, Smart MaterialsandStructures,Vol.18,No.2,pp.025009,2009.[9] A. Erturk, D. J. Inman, On Mechanical Modeling of Cantilevered PiezoelectricVibrationEnergyHarvesters,JournalofIntelligentMaterial SystemsandStructures,Vol.19,No.11,pp.1311-1325,2008.[10]S. Roundy, On the effectiveness of vibration-based energy harvesting,Journalofintelligentmaterialsystemsandstructures,Vol.16,No.10,pp. 809-823,2005.[11]D.Benasciutti,L.Moro,S.Zelenika,E.Brusa,Vibrationenergyscavenging via piezoelectric bimorphs of optimized shapes, MicrosystemTechnologies,Vol.16,No.5,pp.657-668,2010/05/01,2010.English[12]J.Humar,DynamicsofStructures:SecondEdition:Taylor&Francis,2002.[13]A.Erturk,D.J.Inman,ADistributedParameterElectromechanicalModel for Cantilevered Piezoelectric Energy Harvesters, Journal ofVibrationandAcoustics,Vol.130,No.4,pp.041002-041002,2008.[14]A.Erturk,D.J.Inman,PiezoelectricEnergyHarvesting:Wiley,2011.


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