Accession Number : AD0822086

Title :   APPLICATION OF STATISTICAL ENERGY ANALYSIS TO VIBRATIONS OF MULTI-PANEL STRUCTURES.

Descriptive Note : Final rept. Feb 66-Apr 67,

Corporate Author : BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA

Personal Author(s) : Ungar, Eric E. ; Koronaois, Nicholas ; Manning, Jerome E.

Report Date : AUG 1967

Pagination or Media Count : 108

Abstract : Experimentally determined vibratory mean square velocity distributions on a multi-panel planar structure and on a ring-and-stringer reinforced cylindrical shell are compared with predictions obtained from statistical energy analysis. Generally good agreement is observed. The flow of mechanical power between two panels that are separated by a reinforcing beam is studied, in order to uncover the important parameters and to provide information on the coefficients of proportionality between power flow and average modal energy difference, which one must know in order to apply statistical energy analysis. No analytical prediction methods are developed for these coefficients, but an empirical measurement technique is presented and is shown to yield consistent results. Analyses pertaining to dynamic response concentrations in plate and shell structures are summarized, and investigations of response characteristics and response statistics which warrant further pursuit are delineated. (Author)

Descriptors :   (*PANELS, VIBRATION), (*VIBRATION, ENERGY), STATISTICAL ANALYSIS, NOISE, FLAT PLATE MODELS, OSCILLATORS, MULTIPLE OPERATION, ALUMINUM, FINS, POWER, VELOCITY, SOUND TRANSMISSION, MECHANICAL WAVES.

Subject Categories : Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE