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Olsson, J. & Linderholt, A. (2016). Impact evaluation of a thin hybrid wood based joist floor. In: Proceedings of ISMA 2016: International Conference on Noise and Vibration Engineering. Paper presented at International Conference on Noise and Vibration Engineering 2016 (ISMA 2016), September 19-21, 2016, Leuven, Belgium (pp. 589-602).
Open this publication in new window or tab >>Impact evaluation of a thin hybrid wood based joist floor
2016 (English)In: Proceedings of ISMA 2016: International Conference on Noise and Vibration Engineering, 2016, p. 589-602Conference paper, Published paper (Refereed)
Abstract [en]

The purpose of this paper is twofold. The first aim is to develop a numericalanalysis procedure, by combining FRFs from FE-models with analyticalformulas for sound emission and transmission from the ceiling anddownwards within a room with four walls. The aim is to, by applying thisapproach; accomplish a tool which calculates the relative impact soundbetween different joist floors, in the low frequency range. The second aim is tobenchmark a thin hybrid wooden based joist floor with similar thickness,surface weight and global bending stiffness as a concrete hollow core floorstructure. What will be the difference in sound transmission? The question isrelevant since it may be necessary to make thinner wood based joist floors inhigh rise buildings, if wood should stay competitive against concrete. Theresults show that the direct transmissions of impact sound are very similararound the first bending mode. As the frequency increases, the modes in thestructures differ significantly. Below 100 Hz, the concrete floor has 4 modes,while the hybrid joist floor has 9 modes. As the frequency increases the soundradiation characteristics differs. The results show that it is possible to havesimilar sound transmission properties around the first bending modes for ahybrid based joist floor and a hollow core concrete floor structure with similar thicknesses. At the first modes of the structure, the information about thesurface weight and global bending stiffness are useful for prediction of soundtransmission properties but for higher modes, they are not sufficient.

National Category
Building Technologies
Identifiers
urn:nbn:se:ri:diva-36984 (URN)978-1-5108-3591-7 (ISBN)
Conference
International Conference on Noise and Vibration Engineering 2016 (ISMA 2016), September 19-21, 2016, Leuven, Belgium
Funder
Interreg Öresund-Kattegat-Skagerrak
Note

The FE-Model development of the joist floor made within the ProWOOD research education program,funded by the Swedish Knowledge foundation, Linnæus University and SP Technical Research Institute ofSweden. The further sound radiation analysis of the joist floors was made within the Intereg Öresund-Kattegat-Skagerak project Urban Tranquililty.

Available from: 2019-01-07 Created: 2019-01-07 Last updated: 2019-06-24Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-4404-5708

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