Accession Number : AD0749361

Title :   Applications of Statistical Methods to the Vibration and Acoustic Radiation of Fluid Loaded Cylindrical Shells.

Descriptive Note : Technical memo.,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK ORDNANCE RESEARCH LAB

Personal Author(s) : Pallett,David S.

Report Date : 23 MAY 1972

Pagination or Media Count : 227

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 nonresonant motion. For the specific shells under study, the magnitudes of the two components are comparable. (Author)

Descriptors :   (*SHELLS(STRUCTURAL FORMS), ACOUSTIC PROPERTIES), VIBRATION, RESONANT FREQUENCY, MECHANICAL WAVES, ACOUSTICS, UNDERWATER SOUND, EXCITATION, THESES

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE