Low-frequency structure-borne sound power measurements using heavyweight reception plates

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TypeArticle
Proceedings titleProceedings of the 24th International Congress on Sound and Vibration
Series titleProceedings of the ... International Congress on Sound and Vibration
Conference24th International Congress on Sound and Vibration ICSV, July 23-27, 2017, London, UK
ISSN2329-3675
ISBN978-1-906913-27-4
Subjectstructure-borne sound power; reception plate; FEM
AbstractTo quantify the structure-borne sound power injected by building machinery into heavyweight buildings the reception plate method according to EN 15657-1 can be used to provide input data for the prediction model described in EN 12354-5. This paper concerns the assessment of different sampling strategies for vibration measurements that are needed to determine the reception plate power. This is carried out using a validated finite element model for a heavyweight reception plate with viscoelastic material around its boundaries. The lowest differences between the direct injected power and reception plate power are obtained by using a regular grid of sampling positions over the whole reception plate. These investigations are based on harmonic force excitation of randomly distributed single-contact sources. A numerical approach to estimate the structural behaviour of harmonic point force excitations is compared with measurements on a laboratory heavyweight reception plate. Building machinery have usually more than one contact point to the structure, where they are connected. Therefore, multiple-contact sources such as white goods are also determined. The resulting effects of harmonic multiple-force excitations with different positions on the validated reception plate model are discussed.
Publication date
PublisherInternational Congress on Sound and Vibration
LanguageEnglish
AffiliationNational Research Council Canada; Construction
Peer reviewedYes
NPARC number23002145
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Record identifierae76339b-d2f5-4bee-a54b-34ac348871e2
Record created2017-08-25
Record modified2017-08-25
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