CAE Based Approach to Understand a Behavior of Vibro-Acoustic System

  • Kohei Furuya
  • Takuya Yoshimura
  • Nobuyuki Okubo
  • Takeshi Toi
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

In this paper, a CAE based approach to understand a behavior of vibro-acoustic system is introduced. The sound pressure at an evaluation point in an enclosure can be described by inner product of (i)an acoustic transfer function from coupling surface to the evaluation point, and (ii)a structural vibration on the coupling surface. By addition of (iii)the correlation angle between above (i) and (ii), the sound pressure can be exactly estimated. In this paper, the correlation (iii) is called Vibro- Acousitc Coupling Factor (VAC). Using VAC, it is possible to understand not only the radiation efficiency, but also the interference of sound at the evaluation point. The proposing method explains the behavior of vibro-acoustic system using the frequency response of (i), (ii) and (iii). As an example, the proposing method is applied to FE model for improving the vibroacoustic characteristic.

Keywords

Reso Acoustics 

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References

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Kohei Furuya
    • 1
  • Takuya Yoshimura
    • 2
  • Nobuyuki Okubo
    • 1
  • Takeshi Toi
    • 1
  1. 1.Department of Precision MechanicsChuo UniversityTokyoJapan
  2. 2.Department Mechanical EngineeringTokyo Metropolitan UniversityTokyoJapan

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