Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
INVESTIGATION OF THE BANDGAP EFFECT IN LOCALLY RESONANT METASTRUCTURES
Submission Author:
Daniely Amorim das Neves , DF
Co-Authors:
Daniely Amorim das Neves, Adriano Todorovic Fabro
Presenter: Daniely Amorim das Neves
doi://10.26678/ABCM.COBEM2019.COB2019-1336
Abstract
Metamaterials offer excellent flexibility in material design and bring a new perspective on understanding materials, defined as an arrangement of artificial structural elements, designed to achieve advantageous and unusual properties. It stands out in the control of vibrations and noise given its capacity of vibration attenuation for certain bands of frequency, called bandgap effect. Parameters such as wavenumber, group velocity, modal density and dissipated power characterize its dynamic performance and can be analyzed by methods based on wave propagation. This work presents an experimental investigation of the dynamic behavior of metamaterial structures, wavenumber estimation methods were applied to the experimental data obtained and compared to the analytical results, some partial results were obtained and presented in this work.
Keywords
Metamaterials, experimental identification, wavenumbers
