45 Statistical Energy Analysis Takayuki Koizumi

Back

Doshisha University

45.1 Introduction ........................................................................ 45-1

45.2 Power Flow Equations ........................................................ 45-2

Power Flow Equations of a Two-Subsystem Structure †

Power Flow Equations of a Multiple Subsystem Structure

45.3 Estimation of SEA Parameters ........................................... 45-4

Modal Density † Internal Loss Factor † Coupling Loss

Factor † Input Power

45.4 Application in Structures ................................................... 45-7

Application for Prediction of Noise in a Tractor Cabin †

Application for Prediction of Noise and Vibration in a

Building

Summary

This chapter presents the basics of statistical energy analysis (SEA) as applied to acoustic problems in structural

systems. Power flow equations for structures consisting of two or more subsystems are described. The modeling and

analysis procedures for the structural subsystems and acoustic subsystems are given. An estimation procedure of the

necessary SEA parameters is given. The practical application of the SEA procedure in structures is illustrated using a

two-story building as an example.

Навигация