Sound scattering by limited elastic shells
Abstract
The ratio of energy flux to the square of the energy can be used to determine the sound scattering of a finite cylindrical area's radiation impedance. The expression thus obtained approximates the known expression of radiation impedance for an infinite cylindrical area as shell length increases. Scattering amplitude is obtained by means of the radiation impedance. The analysis of this expression allows the primary spatial and temporal resonances to be derived. The present method is applicable to the design of scatterers with prescribed directivity pattern characteristics.
- Publication:
-
International Congress on Recent Developments in Air- and Structure-Borne Sound and Vibration
- Pub Date:
- 1990
- Bibcode:
- 1990rdas.conf..751M
- Keywords:
-
- Acoustic Scattering;
- Cylindrical Shells;
- Elastic Shells;
- Finite Element Method;
- Scattering Amplitude;
- Sound Pressure;
- Acoustic Impedance;
- Eigenvectors;
- Pressure Distribution;
- Acoustics