Sound transmission through pipe systems and into plate structures in buildings. A simplified sea model
conference paper
In the study presented, it has been investigated whether Statistical Energy Analysis (SEA) could be applied in a simplified way as a framework for a prediction model regarding noise due to service equipment, specifically sound transmission within (plastic wastewater) pipe systems and between these pipe systems and (single, homogeneous) plate structures in buildings. A simplified SEA model has been developed. Only radial pipe vibrations and out-of-plane plate vibrations as response components are included. This is based on the hypothesis that these types of vibrations are dominant in the sound transmission studied, and therefore in the sound radiation to rooms. This hypothesis results from several assumptions regarding modal, source and energy transmission properties. The validity of the assumptions has been tested. The results show that the assumptions are generally fulfilled in a large part of the relevant frequency range. Also the prediction accuracy of the model has been estimated for a characteristic application. Although in the future more (detailed) studies for more cases should be done to come to a final conclusion, at this moment the model seems to be promising as the basis for a(n) prediction/engineering tool.
TNO Identifier
331380
Source title
19th International Congress on Acoustics, Madrid, September 2007
Pages
1-6
Files
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