Applications of Statistical Methods to the Vibration and Acoustic Radiation of Fluid Loaded Cylindrical Shells
Abstract
Methods for statistical estimation of the power radiation from point excited, finite, fluid loaded cylindrical shells as well as of the power flow for a three-element coupled system consisting of a finite volume filled with a dense fluid, a finite cylindrical shell structure, and the acoustical volume contained by the shell structure, are reviewed and developed. A procedure is developed for statistical estimation of the magnitude of the acoustic power radiated from such structures due to resonant modal motion, and the relative magnitude of this component is compared with that due to non-resonant motion. For the specific shells under study, the magnitudes of the two components are comparable. The method utilized by Crocker and Price for the computation of the power flow between coupled systems, including non-resonant power flow, is adapted for the case in which a shell structure immersed in a dense fluid is the intermediate system. The ratio of the mean squared acoustic pressures in the two acoustical sub-systems is obtained. The non-resonant power flow path, which corresponds to the power transmission coefficient characterizing the interface between the two acoustic media, appears to be dominant in the present studies.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 23, 1972
- Accession Number
- AD0749361
Entities
People
- David S. Pallett
Organizations
- Pennsylvania State University