K-space analysis of complex large-scale meta-structures using the Inhomogeneous Wave Correlation method

Autor: G. Tufano, Wim Desmet, Mohamed Ichchou, Bert Pluymers, F. Errico, C. Droz, Olivier Robin, Noureddine Atalla
Přispěvatelé: Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne-Centre National de la Recherche Scientifique (CNRS), Groupe d'Acoustique de l'Université de Sherbrooke (GAUS), Département de génie mécanique [Sherbrooke] (UdeS), Université de Sherbrooke (UdeS)-Université de Sherbrooke (UdeS), Université Catholique de Louvain = Catholic University of Louvain (UCL), European Project: 675441,H2020,H2020-MSCA-ITN-2015,VIPER(2016), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne (ENISE)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
0209 industrial biotechnology
Materials science
Loss factor
Acoustics
Shell (structure)
Aerospace Engineering
02 engineering and technology
Sandwich panel
VIPER
01 natural sciences
wavenumber
Resonator
020901 industrial engineering & automation
0103 physical sciences
FM_affiliated
Wavenumber
periodic structures
010301 acoustics
Civil and Structural Engineering
local resonances
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
Plane (geometry)
Mechanical Engineering
Attenuation
[SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph]
vibrations control
Computer Science Applications
Vibration
Control and Systems Engineering
[SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph]
Signal Processing
meta-structures
dispersion curves
Zdroj: Mechanical Systems and Signal Processing
Mechanical Systems and Signal Processing, Elsevier, 2019, 135, pp.106407. ⟨10.1016/j.ymssp.2019.106407⟩
Mechanical Systems and Signal Processing, 2019, 135, pp.106407. ⟨10.1016/j.ymssp.2019.106407⟩
ISSN: 0888-3270
1096-1216
DOI: 10.1016/j.ymssp.2019.106407⟩
Popis: An inverse wavenumber identification tool is used to characterize the vibration behavior of three structures and meta-structures with different complexity levels: a plane steel panel, a curved thick composite sandwich shell and a stiffened aluminum aircraft sidewall panel. Bare structures are first studied and then equipped with spatially distributed small-scale resonators, leading to meta-structures. For the two curved panels, tests are conducted under diffuse acoustic field and point mechanical excitations. For each studied case, the effect of the industrially-oriented small-scale resonators is highlighted using frequency and wavenumber analysis, showing general attenuation of the vibration level and even band gaps occurrence. The complex wavenumber identification allows also estimating the structural loss factor in the composite sandwich panel, while the multi-modal behavior is captured in the aluminum aircraft sidewall panel. ispartof: Mechanical Systems And Signal Processing vol:135 status: Published online
Databáze: OpenAIRE
Externí odkaz: