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HYBRID POWER FLOW ANALYSIS USING SEA PARAMETERS  

Park, Y.H. (Seoul National University, Development of Naval Architecture & Ocean Engineering)
Hong, S.Y. (Seoul National University, Development of Naval Architecture & Ocean Engineering)
Publication Information
International Journal of Automotive Technology / v.7, no.4, 2006 , pp. 423-439 More about this Journal
Abstract
This paper proposes a hybrid analytic method for the prediction of vibrational and acoustic responses of reverberant system in the medium-to-high frequency ranges by using the PFA(Power Flow Analysis) algorithm and SEA(Statistical Energy Analysis) coupling concepts. The main part of this method is the application of the coupling loss factor(CLF) of SEA to the boundary condition of PFA in reverberant system. The hybrid method developed shows much more promising results than the conventional SEA and equivalent results to the classical PFA for various damping loss factors in a wide range of frequencies. Additionally, this paper presents applied results of hybrid power flow finite element method(hybrid PFFEM) by formulating the new joint element matrix with CLF to analyze the vibrational responses of built-up structures. Finally, the analytic results of coupled plate structures and an automobile-shaped structure using hybrid PFFEM were predicted successively.
Keywords
Power flow analysis; Statistical energy analysis; Coupling loss factor; Power flow finite element method; Reverberance factor; Hybrid power flow finite element method;
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Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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