Dynamic response analysis of a flexible flag-like wind energy harvester

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dc.contributorShepard, W. Steve
dc.contributorHubner, James Paul
dc.contributor.advisorMahmoodi, S. Nima
dc.contributor.authorWynn, Logan
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2017-03-01T17:37:25Z
dc.date.available2017-03-01T17:37:25Z
dc.date.issued2014
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractA flexible, flag-like wind energy harvester made from metallized PVDF material is introduced. A mathematical model for the piezoelectric flag excited by wind flow is developed. The model is validated with experimental results. The flag is modeled as an Euler-Bernoulli beam with a low bending rigidity. The wind excitation is modeled using the slender-wing theory. Among other modeling assumptions, the partial differential equation is considered separable and is subjected to two different sets of boundary conditions that are applied to find the mode shapes of the system. The temporal relationship for the electromechanical system is normalized with the resultant eigenfunction. The experimental investigations are performed with longitudinal flow along a PVDF flag in a wind tunnel. Experimental and analytical results match and represent the periodic system response of voltage, power and displacement over time. The two sets of boundary conditions applied to the model provide an envelope for predicting the outputs of the system. Results show that for both sets of boundary conditions, the frequency of the system has a nearly linear relationship to the wind velocity.en_US
dc.format.extent69 p.
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otheru0015_0000001_0002109
dc.identifier.otherWynn_alatus_0004M_11886
dc.identifier.urihttps://ir.ua.edu/handle/123456789/2494
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectMechanical engineering
dc.subjectAerospace engineering
dc.subjectMaterials science
dc.titleDynamic response analysis of a flexible flag-like wind energy harvesteren_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Mechanical Engineering
etdms.degree.disciplineMechanical Engineering
etdms.degree.grantorThe University of Alabama
etdms.degree.levelmaster's
etdms.degree.nameM.S.
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