On the analysis of coupling strength of a stiffened plate-cavity coupling system using a deterministic-statistical energy analysis method

2022 ◽  
Vol 164 ◽  
pp. 108234
Author(s):  
Laith Egab ◽  
Xu Wang
Keyword(s):  
Coupling Strength ◽  
Energy Analysis ◽  
Statistical Energy Analysis ◽  
Stiffened Plate ◽  
Analysis Method ◽  
Coupling System ◽  
Cavity Coupling

Road Noise Modelling Using Statistical Energy Analysis Method

1995 ◽  
Author(s):  
Bangyi Dong ◽  
Martin Green ◽  
Mark Voutyras ◽  
Paul Bremner ◽  
Peter Kasper
Keyword(s):  
Energy Analysis ◽  
Statistical Energy Analysis ◽  
Analysis Method ◽  
Road Noise

Gas Turbine Acoustic Enclosure Design by the Statistical Energy Analysis Method

1995 ◽  
Vol 117 (3) ◽  
pp. 554-556
Author(s):  
L. K. H. Lu ◽  
M. Mitchell
Keyword(s):  
Gas Turbine ◽  
Energy Analysis ◽  
Transmission Loss ◽  
Closed Form Solution ◽  
Complex Problem ◽  
Form Solution ◽  
Statistical Energy Analysis ◽  
Analysis Method ◽  
Multiple Components ◽  
Practical Design

Acoustic enclosure design is a complex problem that involves the interaction of multiple components. Yet the present conventional approach uses a two-dimensional closed-form solution to evaluate transmission loss of acoustic wall. In this paper, Statistical Energy Analysis (SEA) was first studied for simple cases of radiation efficiency, transmission loss, and flanking path calculations. The effectiveness of the SEA method for complex systems was then demonstrated through a practical design application to gas turbine enclosure. It was found that SEA was a useful tool for gas turbine acoustic enclosure design.

scholarly journals Coupling strength assumption in statistical energy analysis

2017 ◽  
Vol 473 (2200) ◽  
pp. 20160927 ◽  
Author(s):  
T. Lafont ◽  
N. Totaro ◽  
A. Le Bot
Keyword(s):  
Coupling Strength ◽  
Energy Flow ◽  
Energy Analysis ◽  
Flow Direction ◽  
Statistical Energy Analysis ◽  
Coupling Loss ◽  
Indirect Coupling ◽  
Random Forces ◽  
Statistical Ensembles ◽  
Coupled Plates

This paper is a discussion of the hypothesis of weak coupling in statistical energy analysis (SEA). The examples of coupled oscillators and statistical ensembles of coupled plates excited by broadband random forces are discussed. In each case, a reference calculation is compared with the SEA calculation. First, it is shown that the main SEA relation, the coupling power proportionality, is always valid for two oscillators irrespective of the coupling strength. But the case of three subsystems, consisting of oscillators or ensembles of plates, indicates that the coupling power proportionality fails when the coupling is strong. Strong coupling leads to non-zero indirect coupling loss factors and, sometimes, even to a reversal of the energy flow direction from low to high vibrational temperature.

Sign in / Sign up

Export Citation Format

Share Document