Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ANALYSIS OF VIBRATION ATTENUATION IN A BEAM COUPLED WITH A PIEZOELECTRIC IN SHUNT CONFIGURATION USING THE SPECTRAL ELEMENT METHOD
Submission Author:
Braion Moura , GO
Co-Authors:
Braion Moura, Marcela Machado
Presenter: Braion Moura
doi://10.26678/ABCM.COBEM2019.COB2019-1248
Abstract
The study describes an analysis of the periodic, shunt piezoelectric patches applied to the attenuation of wave propagation in a beam with periodic characteristics, using the Spectral Element Method (SEM) as formulation. The Spectral Element method is used to model vibrations and monitoring applications in structural integrity, in this case addressing the coupling of a piezoelectric derivative connected to a Timoshenko beam. The approach on the subject refers to the description of several characteristics involved, such as the geometric analysis of coupling and its interactions to the behaviour in the structure, properties of metamaterials in vibrations and shunts configurations for wave attenuations. The results of this study express a structural attenuation proportional to the use of a piezoelectric shunt configuration as an actuator. The frequency response function confirms an attenuation to a frequency resonance designed for the pzt-shunt.
Keywords
Attenuation Frequency Ranges, Multi-Resonance Shunts, Piezoelectric Actuator, spectral element method
