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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Numerical Model of an Edge-clamped Rectangular Plate Based on a Mode Method to Predict Acoustic Radiation Characteristics

모드법에 의한 클램프 조건 사각평판의 음향방사특성 예측모델

  • 유지우 (현대기아자동차 차량해석팀)
  • Received : 2011.02.16
  • Accepted : 2011.03.14
  • Published : 2011.04.20
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Abstract

A numerical model based on a mode method coupling beams and a rectangular plate is proposed to estimate radiation characteristics of an edge-clamped rectangular plate. The radiation efficiency and radiation power in the audio frequency range including the critical frequency can be predicted. The proposed model is rather simple and straightforward and gives reliable results comparing to the previous studies. The estimated radiation characteristics are compared to those of the pinned condition plates and also to those based on the formulae proposed by Maidanik. The radiation efficiency of the clamped plate seems a little higher than that of the pinned plate in the frequency range of corner and edge modes. It is explicitly shown that the power as well as efficiency at high frequencies is not influenced by these edge boundary conditions.

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References

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