Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)

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

결함형 유한요소-경계요소 기법에 의한 심해저용 30 kHz 전방향성 소나 변환기 최적 설계

  • Jarng Soon Suck (Dept. of Electrical Control & Instrumentation, Chosun University) ;
  • Choi Heun Ho (Dept. of Electrical Control & Instrumentation, Chosun University) ;
  • Lee Je Hyeong (Dept. of Electrical Control & Instrumentation, Chosun University) ;
  • Ahn Heung Gu (Dept. of Electrical Control & Instrumentation, Chosun University)
  • 장순석 (조선대학교 전기.제어계측공학부) ;
  • 최현호 (조선대학교 제어계측공학과) ;
  • 이제형 (조선대학교 대학원 제어계측공학과) ;
  • 안홍구 (조선대학교 대학원 제어계측공학과)
  • Published : 1999.11.06
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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 30 kHz, 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 +/- 3 dB omnidirectivity at 30 kHz.

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