Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Development of Noise Analysis Program by using Power Flow Analysis in Medium-to-high Frequency Ranges

파워흐름해석법을 이용한 중고주파수 대역 소음해석 프로그램 개발

  • Kwon, Hyun-Wung (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Song, Jee-Hun (Department of Naval Architecture & Ocean Engineering, Chonnam National University) ;
  • Hong, Suk-Yoon (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • 권현웅 (서울대학교 조선해양공학과) ;
  • 송지훈 (전남대학교 해양기술학부 조선해양공학전공) ;
  • 홍석윤 (서울대학교 조선해양공학과)
  • Received : 2012.03.06
  • Accepted : 2012.08.29
  • Published : 2012.10.20
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Abstract

Power Flow Analysis (PFA) is introduced for solving the noise and vibration analysis of structures in medium-to-high frequency ranges. The vibration analysis software, $PFADS_{C{+}{+}}$ R4 based on Power Flow Finite Element Method (PFFEM) and the noise prediction software, $NASPFA_{C{+}{+}}$ R1 based on Power Flow Boundary Element Method (PFBEM) are developed. In this paper, the coupling equation which represents relation between structural energy and acoustic energy is developed for vibro-acoustic coupling analysis. And vibro-acoustic coupling analysis software based on PFA and coupling equation is developed. Developed software is composed of translator, cavity-finder, solver and post-processor over all. Translator can translate FE model into PFADS FE model and cavity-finder can automatically make NASPFA BE model from PFADS FE model for noise analysis. The solver module calculates the structural energy density, intensity of structures, the fictitious source on the boundary and the acoustic energy density at the field in acoustic cavities. Some applications of vibro-acoustic coupling analysis software to various structures and cruise ship are shown with reliable results.

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References

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