• Title/Summary/Keyword: Composite Noise

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Noise control of a slab using the laminated composite damping system (평판 부착형 제진시스템을 이용한 구조기인 소음 저감에 관한 연구)

  • Hwang, Jae-Seung;Kim, Gwang-Young;Hong, Geon-Ho
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2009.04a
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    • pp.403-407
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    • 2009

  • It is reported that the heavy weight floor impact noise of a slab system is very sensitive to the location of microphone and impact load. In addition, it is known that the aspect raio, thickness and boundary condition of a slab also have great effect on the noise induced by impact load. However, the effect has been mainly evaluated by experimental test and numerical analysis is nearly performed to verify the effect quantitatively. In this study, the effect of the aspect ratio, thickness and boundary condition on the heavy weight floor impact noise is examined through numerical analysis for simple rectangular slab system. The results show that the thickness and boundary condition have a strong correlation with the noise of the slab, on the contrary, the aspect ratio has little relation with the noise.

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