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Sound transmission through lightweight parallel plates: part 2 - structure borne sound.

Craik, R J M and Smith, Sean (2000) Sound transmission through lightweight parallel plates: part 2 - structure borne sound. Applied Accoustics, 61 (2). pp. 247-269. ISSN 0003-682X

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Abstract/Description

In Part I of this paper sound transmission through double leaf lightweight partitions was examined. It was shown that an important part of the overall transmission is determined by structure-borne sound transmission between the two leaves of the wall. In this report, Part II of the paper, structural coupling is examined in more detail. Two theories are presented. One is appropriate where the connection behaves as a series of points and the other where the connection behaves as a continuous line. It was found that an appropriate transition frequency between these two theories was where a half bending wavelength on the plate fitted between the nails or screws that form the coupling. In the most common forms of construction the connection will behave as a series of independent points for most of the frequency range. The continuous line model included the frame either as a beam or as a short plate. It was found that the agreement with the experimental data was better when the frame was modelled as a plate.There was good agreement between the measured and predicted data for transmission between the two leaves of the wall for a wide variety of structures. These theories can be incorporated into a statistical energy analysis model to enable the sound transmission throughout the entire structure to be predicted as was shown in Part I of this paper

Item Type: Article
Print ISSN: 0003-682X
Electronic ISSN: 1872-910X
Uncontrolled Keywords: Sound transmission; lightweight partitions; double leaf; structure-borne; coupling; Statistical Energy Analysis;
University Divisions/Research Centres: Edinburgh Napier University, Institute for Sustainable Construction
Dewey Decimal Subjects: 700 Arts & recreation > 720 Architecture > 729 Design & decoration
Library of Congress Subjects: T Technology > TH Building construction
Item ID: 4795
Depositing User: Mrs Lyn Gibson
Date Deposited: 30 Nov 2011 11:50
Last Modified: 13 Sep 2013 15:10
URI: http://researchrepository.napier.ac.uk/id/eprint/4795

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