Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Vibro-acoustic Analysis of Adjoined Two Rooms Using 3-D Power Flow Finite Element Method

3차원 파워흐름유한요소법을 이용한 인접한 두 실내에서의 진동음향 해석

  • 김성희 (서울대학교 대학원 조선해양공학과) ;
  • 홍석윤 (서울대학교 조선해양공학과) ;
  • 길현권 (수원대학교 기계공학과) ;
  • 송지훈 (전남대학교 조선해양공학과)
  • Published : 2010.01.20
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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).

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References

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