Empirical corrections for predicting the sound insulation of double leaf cavity stud building elements with stiffer studs

Davy, J, Fard, M, Dong, W and Loverde, J 2019, 'Empirical corrections for predicting the sound insulation of double leaf cavity stud building elements with stiffer studs', Journal of the Acoustical Society of America, vol. 145, no. 2, pp. 703-713.


Document type: Journal Article
Collection: Journal Articles

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Title Empirical corrections for predicting the sound insulation of double leaf cavity stud building elements with stiffer studs
Author(s) Davy, J
Fard, M
Dong, W
Loverde, J
Year 2019
Journal name Journal of the Acoustical Society of America
Volume number 145
Issue number 2
Start page 703
End page 713
Total pages 11
Publisher Acoustical Society of America
Abstract The experimentally determined normal incident mass-air-mass resonance frequency for a double leaf cavity stud building element is significantly greater than the theoretically predicted frequency for wood studs and steel studs manufactured from thicker sheet steel. This paper gives a method for calculating the effective mass-air-mass resonance frequency as the root mean square sum of the mass-air-mass resonance frequency and the resonance frequency of the first bending wave mode of the leaves between the studs. This calculation should use the isothermal mass-air-mass resonance frequency if the building element cavity contains porous sound absorbing material. If the cavity does not contain porous sound absorbing material, the usual adiabatic mass-air-mass resonance frequency should be used in the calculation. Because the exact boundary conditions of the building element leaves at the studs and the effective in situ damping are unknown, the paper gives empirical correction factors to determine the actual resonance frequency and the depth of the dip in the predicted sound insulation. This paper also gives empirically derived formulae for the line and point equivalent translational compliances of steel studs manufactured from different sheet steel gauges and compares them with formulae derived by other authors for the case of 25 gauge steel studs.
Subject Acoustics and Acoustical Devices; Waves
Acoustics and Noise Control (excl. Architectural Acoustics)
Architectural Science and Technology (incl. Acoustics, Lighting, Structure and Ecologically Sustainable Design)
Keyword(s) Sound insulation
Sound transmission loss
Double leaf cavity stud walls
Steel studs
DOI - identifier 10.1121/1.5089222
Copyright notice © 2019 Acoustical Society of America.
ISSN 0001-4966
Additional Notes Copyright (2019) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Davy, J, Fard, M, Dong, W and Loverde, J 2019, 'Empirical corrections for predicting the sound insulation of double leaf cavity stud building elements with stiffer studs', Journal of the Acoustical Society of America, vol. 145, no. 2, pp. 703-713 and may be found at https://doi.org/10.1121/1.5089222
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