任意形状の振動物体の放射音場の計算

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書誌事項

タイトル別名
  • Calculation of Sound fields radiated by an arbitrarily shaped vibrating body
  • ニンイ ケイジョウ ノ シンドウブツタイ ノ ホウシャ オンジョウ ノ ケイサ

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抄録

A method of approximately calculating the sound fields radiated by an arbitrarily shaped vibrating body was investigated. The diffraction of sound around an arbitrarily shaped vibrating body was considered with Kirchhoff's formula, modified by the directivity of a point source on a sphere, because it was considered too difficult to calculate the directivity of a point source on the vibrating body. The sound fields of the rectangular model source were obtained with the directivity of a point source on a sphere which had the same volume as the model source. The sound fields which were obtained in calculations itself agreed well with the experimental fields. The sound field was calculated using the measured directivities of a point source placed alternately at two points on the surface of the rectangular model source. The result obtained agreed with the experimental result.

収録刊行物

  • 日本音響学会誌

    日本音響学会誌 35 (9), 486-492, 1979

    一般社団法人 日本音響学会

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