多孔板を含む音場の数値解析法に関する研究 : 第1報,多孔板の音響連成振動を考慮しない場合(機械力学,計測,自動制御)

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  • Research on Numerical Analysis Technique for Sound Fields Including Perforated Plate : 1st Report, Case in Which Vibration of Perforated Plate is Negligible(Mechanical Systems)
  • 多孔板を含む音場の数値解析法に関する研究(第1報)多孔板の音響連成振動を考慮しない場合
  • タコウバン オ フクム オンジョウ ノ スウチ カイセキホウ ニ カンスル ケンキュウ ダイ1ポウ タコウバン ノ オンキョウ レンセイ シンドウ オ コウリョシナイ バアイ

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抄録

Numerical analysis technique for three dimensional sound fields including perforated plates, by boundary element method is proposed. This technique is useful to design sound absorption structure of perforated plate efficiently. To verify validity of the numerical analysis method, the sound field in the acoustic tube in which perforated plate was installed to be slanted was predicted, and the result was compared with experiment. The sound absorption coefficient and the sound pressure distribution on the perforated plate by this numerical analysis agreed with experiment result. In conclusion, the accuracy of the proposed method is high enough and the method is useful for designing sound absorption structure using perforated plate.

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