简介：Inthisletter,apiezoaeroelasticenergyharvesterbasedonanairfoilwithdoubleplungedegreesoffreedomisproposedtoadditionallytakeadvantageofthevibrationalenergyoftheairfoilpitchmotion.Ananalyticalmodeloftheproposedenergyharvestingsystemisbuiltandcomparedwithanequivalentmodelusingthewell-exploredpitch-plungeconfiguration.Thedynamicresponseandaveragepoweroutputoftheharvesterarenumericallystudiedastheflowvelocityexceedsthecut-inspeed(flutterspeed).Itisfoundthattheharvesterwithdouble-plungeconfigurationgenerates4%–10%morepowerwithvaryingflowvelocitieswhilereducing6%ofthecut-inspeedthanitscounterpart.
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