J. Phys. Colloques
Volume 51, Numéro C2, Février 1990Premier Congrès Français d'Acoustique / First French Conference on Acoustics
|Page(s)||C2-357 - C2-360|
J. Phys. Colloques 51 (1990) C2-357-C2-360
FINITE ELEMENT STUDIES OF SINGLE CAVITY ACOUSTIC ABSORBERSR.W. HARRISON
Naval Surface Warfare Center, Code R31, Silver Spring, MD 20903-5000, U.S.A.
A dedicated, time dependent finite element program was used to study the absorption of sound in a viscoelastic cylinder containing a cavity. The effect on the sound absorption and the cylinder surface impedance of varying the cavity's size and shape was examined. Representative models were made and tested in a novel impedance tube and the experimental data is in good agreement with the finite element studies.