Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Bandgap analysis for periodic frame metastructure coupled with local resonators
Submission Author:
wanderson vinicius de oliveira monteiro , SP
Co-Authors:
wanderson vinicius de oliveira monteiro, Edilson Dantas Nóbrega, Jose Maria Campos dos Santos
Presenter: wanderson vinicius de oliveira monteiro
doi://10.26678/ABCM.COBEM2023.COB2023-1797
Abstract
Vibration control in structures is essential to guarantee the stability and safety of the people who use them. For decades, several techniques have been developed to control vibration, recently, metastructures have attracted attention for their unique properties of controlling wave propagation in structures making them of great interest for modern engineering. In this work, we investigate the use of metastructure to control vibrations in structures using the Spectral Element Method (SEM) , Finite Element Method (FEM) and Wave Finite Element (WFE) method to analyze the dynamics of metastructures. These metastructures are built with periodic unit-cells, which are made by two materials coupled with local resonators. Forced responses are calculated to determine the attenuation regions along the frame structure. The influence of the constituent properties of the structure on its formation is evaluated through band-gaps obtained. Obtained results show frequency bands where the wave propagation does not occur (bandgaps), and the structure's forced response exhibited attenuation at the same range frequency. The present study made it possible to understand the behavior of the presented structure, where the obtained results contribute to the expansion of the possibilities of application of metastructure in the control of vibrations in structures.
Keywords
Metastructure, periodic structures, wave propagation, band gaps
