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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Experimental Modal Analysis of Perforated Rectangular Plates Submerged In Water

물에 잠긴 다공 직사각평판의 실험적 모드 해석

  • 유계형 (전북대학교 대학원 기계공학과) ;
  • 이명규 (전북대학교 대학원 기계공학과) ;
  • 정경훈 (한국원자력연구소) ;
  • 이성철 (전북대학교 기계항공시스템공학부 공업기술연구센터)
  • Published : 2003.01.01
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Abstract

This paper dealt with an experimental study on the hydroelastic vibration of clamped perforated rectangular plates submerged in water. The penetration of holes in the plates had a triangular pattern with P/D (pitch to diameter) 1.750, 2.125, 2.500, 3.000 and 3.750. The natural frequencies of the perforated plates in air were obtained by the analytical method based on the relation between the reference kinetic and maximum potential energy and compared with the experimental results. Good agreement between the results was found for the natural frequencies of the perforated plates in air. It was empirically found that the natural frequencies of the perforated plate in air increase with an increase of P/D, on the other hand, the natural frequencies of the perforated plate in contact with water decrease with an increase of P/D. Additionally. the effect of the submerged depth on the natural frequency was investigated.

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References

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