103 Design of Sound Absorbing Device Using Resonator and Absorbing Materials

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  • 103 共鳴器と吸音材を併用した騒音抑制デバイス設計法の検討(騒音・振動の解析・改善)
  • 共鳴器と吸音材を併用した騒音抑制デバイス設計法の検討
  • キョウメイキ ト キュウオンザイ オ ヘイヨウ シタ ソウオン ヨクセイ デバイス セッケイホウ ノ ケントウ

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This paper describes the design method of the device with absorptive material and a resonator which can obtain the maximum acoustic energy absorption. The dimensions of a resonator and volume of absorptive materials are optimized by statistical analysis. We confirm the performance of the sound absorption device based on the optimization result by measuring the normal incidence acoustic energy absorption using the transfer function method. The experimental results of acoustic energy absorption agree with the calculated results. The acoustic energy absorption in low frequency region can be improved by using the sound absorptive device having the resonator.

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