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Hybrid Type Vibration Power Flow Analysis Method Using SEA Parameters  

박영호 (서울대학교 Department of Naval Architecture and Ocean Engineering)
홍석윤 (서울대학교 Department of Naval Architecture and Ocean Engineering)
Publication Information
The Journal of the Acoustical Society of Korea / v.21, no.4, 2002 , pp. 164-164 More about this Journal
Abstract
This paper proposes a hybrid method for vibration analysis in the medium to high frequency ranges using Power Flow Analysis (PFA) algorithm and Statistical Energy Analysis (SEA) coupling concepts. The main part of the developed method is the application of coupling loss factor (CLF) suggested in SEA to the power transmission, reflection coefficients in PI' A boundary conditions. The developed hybrid method shows very promising results with regard to the applications for the various damping loss factors in wide frequency ranges. And also this paper presents the applied results of Power Flow Finite Element Method (PFFEM) by forming the new joint element matrix with CLF to analyze the various plate structures in shape. The analytical results of automobile, complex plate structures show good agreement with those of PFFEM using the PFA coefficients.
Keywords
Power flow analysis(PFA); Power flow finite element method(PFFEM); Statistical energy analysis(SEA); Damping loss factor; Coupling loss factor; Joint element matrix;
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