Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Experimental assessment of piezoelectric energy harvesting from VIV on cantilevered flexible cylinders with orthotropic bending stiffness
Submission Author:
Letícia Madi , SP , Brazil
Co-Authors:
Letícia Madi, Wagner Antonio Defensor Filho, Guilherme Vernizzi, Andre Mitsuo Kogishi, CELSO Pupo Pesce
Presenter: Letícia Madi
doi://10.26678/ABCM.COBEM2023.COB2023-1611
Abstract
Vortex-induced vibrations (VIV) is a phenomenon characterized by self-excited oscillations which can be exploited for low-power energy harvesting. In this experimental study, an orthotropically stiffened cantilevered cylinder with piezoceramic components is used to convert vibratory energy into electrical energy, exploring the high-energy branch observed in VIV experiments with this particular configuration. The experiments were conducted at the IPT towing tank, for various constant towing velocities until reaching a steady state. Reduced velocities up to Ur = 20 were reached, allowing exploration of various VIV frequencies and response branches. Measurements included the electric tension output of piezoelectric circuits and cylinder displacements tracked through an optical system. This proof-of-concept study lays the groundwork for potential applications of VIV energy harvesting and provides valuable insights for future optimizations.
Keywords
flow-induced vibration, piezoelectric energy harvesting, Vortex-Induced Vibration, experimental analysis, orthotropic stiffness
