Coherent perfect absorption induced by the nonlinearity of a Helmholtz resonator - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the Acoustical Society of America Année : 2016

Coherent perfect absorption induced by the nonlinearity of a Helmholtz resonator

(1) , (1) , (1)
1

Résumé

In this work, coherent perfect absorption of sound waves induced by the nonlinear response of a Helmholtz Resonator side loaded to a waveguide, is reported. It is shown that this two-port system can perfectly absorb two high amplitude symmetric incident waves under a certain condition. For the one-sided incidence configuration, this condition leads to an absorption equal to 0.5. Experiments verify these results and are in agreement with an analytical nonlinear impedance model for the resonator. The nonlinear control of perfect absorption opens new possibilities in the design of high amplitude sound attenuators for aero-engine applications.

Dates et versions

hal-02406981 , version 1 (12-12-2019)

Identifiants

Citer

V. Achilleos, Olivier Richoux, Georgios Theocharis. Coherent perfect absorption induced by the nonlinearity of a Helmholtz resonator. Journal of the Acoustical Society of America, 2016, 140 (1), pp.EL94-EL100. ⟨10.1121/1.4954869⟩. ⟨hal-02406981⟩
30 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More