Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
ENERGY FLOW ANALYSIS APPLIED TO DYNAMIC BEHAVIOR OF METAMATERIALS
Submission Author:
Dalmo Inacio Galdêz Costa , MA
Co-Authors:
Edilson Dantas Nóbrega, Vilson Souza Pereira, Dalmo Inacio Galdêz Costa, Jose Maria Campos dos Santos
Presenter: Dalmo Inacio Galdêz Costa
doi://10.26678/ABCM.CONEM2018.CON18-1403
Abstract
Flow of mechanical energy has been used successfully in dynamic analyses of structures. It results in an efficient way of identifying discontinuities due to the notches presence or geometry changes like section or orientation in axial direction of the element. In order to reduce dangerous levels of vibration, many strategies have been applied, among them, one can cite the changes in geometry or material, known Phononic Crystals (PC). One of the newest approach involves the use of elastic metamaterial with the aim of creating vibration bandgaps. This technique uses certain types of geometric or materials configurations, that form a cell that is repeated periodically. It is possible then to obtain its corresponding transfer matrix. In this work, an energy flow analysis is used to study the behavior of a specific elastic metamaterial using Energy Spectral Element Method. Further applications of this behavior are discussed.
Keywords
Bandgap, phononic cristal, energy flow, metamaterial
