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Energy harvesting in a cylinder with a single degree of freedom subjected to aeroelastic vibrations

Grant number: 19/26929-2
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2020
Effective date (End): February 28, 2021
Field of knowledge:Engineering - Aerospace Engineering - Aerospace Structures
Principal Investigator:Rui Marcos Grombone de Vasconcellos
Grantee:Sérvio Túlio Suenai Haramura Bastos
Home Institution: Universidade Estadual Paulista (UNESP). Campus Experimental São João da Boa Vista. São João da Boa Vista , SP, Brazil

Abstract

The mechanical-electrical energy conversion has been gaining prominence in a lot of studies in the last years. In particular, the aeroelastic vibration energy harvesting, provided by the fluid motion around the structures, especially in a cylindrical shape, has excelled. This type of structure are common and wildly employed in a different branch of engineering, such as landing gear in aircraft, bridge pillars, chimneys, transmission lines and in the extraction of oil from under the de sea. The understanding of aeroelastic phenomena that lead vibrations has been targeted at interesting the scientific community, because of the high risk of structural integrity. Mathematical models, based on computation fluid dynamic remain challenging, even computational development in the last decades. Thus, empirical reduced models become, therefore important, both understand and to develop techniques to control vibrations. In this research, is proposed the implementation of an empirical electromechanical model of a cylinder with a single degree of freedom with piezoelectric transductors coupling with the structures, subjected to aeroelastic vibrations including structural nonlinear effects. The parametric study must approach two fundamental aspects of the energy harvesting: the suppression effect or control of vibrations and the optimization system effect of energy generation system effect via piezoelectric transductor. The results of this research can be helpful to the development of accurate models of energy harvesting and vibrations control. (AU)