Browsing by Author "Golpaygani, Ali"

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    Development of the structural model for a thin walled open profile rectangular cantilever beam with longitudinally embedded piezoelectric
    (Bahçeşehir Üniversitesi Fen Bilimleri Enstitüsü, 2015-06) Golpaygani, Ali; Gür, M. Berke
    Morphing blade can change shape and adapt to various operating conditions, resulting in more efficient wing operation. In addition, shape control can be used for active vibration suppression, thereby improving the service life of the blade. In this thesis, a thin walled, open rectangular profile beam is used as a simplified model of morphing wind turbine blades. Piezoelectric strips are assumed to be embedded to the outer surface of the beam for shape and vibration control. An analytic elastic structural model of the beam is developed based on the coupled flexural-torsional model using energy approaches. A general model for the interaction between the beam and the piezoelectric strips is assumed. Due to the shortcomings of this interaction model, two equivalent models are developed. The analytic results obtained from the structural model are compared and validated with the results obtained from a numerical finite element software.