Identification of high frequency loads using statistical energy analysis method

2013 ◽  
Vol 35 (1-2) ◽  
pp. 291-306 ◽  
Author(s):  
S.L. Xie ◽  
Y.H. Zhang ◽  
Q. Xie ◽  
C.H. Chen ◽  
X.N. Zhang
Keyword(s):  
High Frequency ◽  
Energy Analysis ◽  
Statistical Energy Analysis ◽  
Analysis Method

Power Flow and Energy Sharing between an Oscillator and a Continuous Receiver Structure

2011 ◽  
Vol 189-193 ◽  
pp. 1914-1917
Author(s):  
Lin Ji
Keyword(s):  
High Frequency ◽  
Power Flow ◽  
Energy Analysis ◽  
Statistical Energy Analysis ◽  
Coupled Subsystems ◽  
Modal Density ◽  
Vibration Problems ◽  
Energy Sharing ◽  
High Modal Density ◽  
Vibration Modeling

A key assumption of conventional Statistical Energy Analysis (SEA) theory is that, for two coupled subsystems, the transmitted power from one to another is proportional to the energy differences between the mode pairs of the two subsystems. Previous research has shown that such an assumption remains valid if each individual subsystem is of high modal density. This thus limits the successful applications of SEA theory mostly to the regime of high frequency vibration modeling. This paper argues that, under certain coupling conditions, conventional SEA can be extended to solve the mid-frequency vibration problems where systems may consist of both mode-dense and mode-spare subsystems, e.g. ribbed-plates.

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.

On a structural–acoustic panel cavity modelling in the mid-high frequency domain

2011 ◽  
Vol 226 (4) ◽  
pp. 900-912 ◽  
Author(s):  
M de Rochambeau ◽  
M Ichchou ◽  
B Troclet
Keyword(s):  
Finite Element ◽  
Frequency Domain ◽  
High Frequency ◽  
Energy Analysis ◽  
Coupled System ◽  
Element Model ◽  
Statistical Energy Analysis ◽  
Hybrid Strategy ◽  
Interaction Modelling

This article presents a fluid–structure interaction modelling, based on a coupling between component mode synthesis or finite element and statistical energy analysis (SEA). The hybrid strategy is applied on a panel–cavity coupled system using a modal analysis with uncoupled modes of the subsystems and through a finite element model of the coupled system. The determination of the energy transfer parameters is then considered. The hybrid SEA model is then validated in the high-frequency domain by comparison with an SEA model. Finally, a parametric survey is offered through the established modelling and conclusions on its validity domain are drawn.

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