Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Analysis of wave propagation in origami-like structures
Submission Author:
Edilson Dantas Nóbrega , MA , Brazil
Co-Authors:
Edilson Dantas Nóbrega, Vilson Souza Pereira, Dalmo Inacio Galdêz Costa, Jose Maria Campos dos Santos
Presenter: Edilson Dantas Nóbrega
doi://10.26678/ABCM.COBEM2021.COB2021-2337
Abstract
Periodic structures made of identical patterns (phononic crystals - PCs), with the purpose of obtaining certain desired phenomena known as band gaps, have aroused a great interest in modern engineering. Although the efficiency of PC structures has been analyzed in several experimental ways, an explanation of the influence of pattern topology on wave propagation properties is still lacking. This work focuses on analyzing the propagation of waves along a periodic structure of the origami type. In this model, longitudinal and flexion movements are incorporated. The elements are connected at a certain angle to form a triangular geometry. A parametric analysis is proposed to analyze the influence of the coupling angle, as well as the length of the frame elements. The dispersion curves of the wave propagation modes of the structure were also investigated.
Keywords
wave propagation, band gaps, Phononic Crystals, dispersion diagram, periodic structures
