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http://dx.doi.org/10.5050/KSNVE.2010.20.1.074

Vibro-acoustic Analysis of Adjoined Two Rooms Using 3-D Power Flow Finite Element Method  

Kim, Sung-Hee (서울대학교 대학원 조선해양공학과)
Hong, Suk-Yoon (서울대학교 조선해양공학과)
Kil, Hyun-Gwon (수원대학교 기계공학과)
Song, Jee-Hun (전남대학교 조선해양공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.20, no.1, 2010 , pp. 74-82 More about this Journal
Abstract
Power flow analysis(PFA) methods have shown many advantages in noise predictions and vibration analysis in medium-to-high frequency ranges. Applying the finite element technique to PFA has produced power flow finite element method(PFFEM) that can be effectively used for analysis of vibration of complicated structures. PFADS(power flow analysis design system) based on PFFEM as the vibration analysis program has been developed for vibration predictions and analysis of coupled structural systems. In this paper, to improve the function of vibro-acoustic coupled analysis in PFADS, the PFFEM has been extended for analysis of the interior noise problems in the vibro-acoustic fully coupled systems. The vibro-acoustic fully coupled PFFEM formulation based on energy coupled relations is extended to structural system model by using appropriate modifications to structural-structural, structural-acoustic and acoustic-acoustic joint matrices. It has been applied to prediction of the interior noise in two room model coupled with panels, and the PFFEM results are compared to those of statistical energy analysis(SEA).
Keywords
Power Flow Finite Element Method; Vibro-acoustic Coupled Analysis; Interior Noise Prediction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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