The Journal of the Acoustical Society of Korea

The Acoustical Society of Korea (한국음향학회)
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Optimal Design of Deep-water 30kHz Omnidirectional Sonar Transducer Using a Coupled FE-BEM

  • Jarng, Soon-Suck (Dept. of Electrical Control & Instrumentation, Chosun University)
  • Published : 1999.12.01
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Abstract

Deep-water sonar transducers of FFR (Free Flooded Ring) type have been designed using a coupled FE-BEM. The proposed sonar transducers are composed of piezoelectric ceramic tubes and structural steel materials for simple fabrication. In order to have an omnidirectional beam pattern around 30kHz, a conic steel is placed below a piezoelectric tube or a steel disc is placed between two piezoelectric tubes. The dynamics of the sonar transducer is modelled in three dimensions and is analyzed with external electrical excitation conditions. Various results are available such as directivity patterns and transmitting voltage responses. The most optimal structure and dimensions of the steel material were calculated, so that the beam patterns of the sonar transducers had +/- 3dB omnidirectivity at 30kHz.

Keywords

References

  1. Ph.D. Theis, University of Birmingham, Engineering Faculty SONAR Transducer Design & Optimization using the Finite Element Method S.S.Jarng
  2. Proceedings Institute of Acoustics v.21 PZT5 shell-typed hydrophone simulation using a coupled FE-BE method S.S.Jarng
  3. J. Sound & Vibration v.115 no.3 A three dimensional infinite element for wave propagation J.P.E.Goransson;C.F.Davidsson
  4. J. Acoust. Soc. Am. v.86 no.4 Finite element modeling of radiating structures using dipolar damping elements R.Bossut;J.N.Decarpigny
  5. Int. J. Numer. Method Eng. v.2 Finite element method for piezoelectric vibration H.Allik;T.J.R.Hughes
  6. J. Acoust. Soc. Am. v.41 Integral equation method for radiation from vibrating bodies L.G.Copley
  7. J. Acoust. Soc. Am. v.44 Fundamental results concerning integral representations in acoustic radiation L.G.Copley
  8. The foundation of acoustics E.Skudrzyk
  9. Proc. Inst. of Acoust v.12 A boundary element method for the analysis of the acoustic field in three dimensional fluid-structure interaction problems D.T.I.Francis
  10. J. Acoust. Soc. Am. v.44 Improved integral formulation for acoustic radiation problems H.A.Schenck
  11. Proc. R. Soc. London, Ser. A v.323 The application of integral integration methods to the numerical solutions of some exterior boundary problems A.J.Burton;G.F.Miller
  12. SIAM Rev. v.16 Boundary integral equations for the three dimensional Helmholtz equation R.F.Kleinman;G.F.Roach
  13. J. Acoust. Soc. Am. v.93 no.4 A gradient formulation of the Helmholtz integral equation for acoustic radiation and scattering D.T.I.Francis
  14. Int. J. Num. Methods Eng. v.11 The coupling of finite element method and boundary solutions procedures O.C.Zienkiewicz;D.Kelly;P.Bettess