Structure-Borne Sound Transmission in Rib-Stiffened Plate Structures Typical of Wood Frame Buildings

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1260/1351010991501356Building Acoustics, 6, 3/4, pp. 289-308, 1999 Structure-borne sound transmission in rib-stiffened plate structures typical of wood frame buildings Bosmans, I.; Nightingale, T. R. T.Structure-borne sound transmission in ribstiffened plate structures typical of wood frame buildings Bosmans, I.; Nightinghale, T. R. T.A version of this paper is published in / Une version de ce document se trouve dans :Building Acoustics, v. 6, no. 3/4, 1999, p. 289-308 www.nrc.ca/irc/ircpubs NRCC-43674 I. Bosmans and T.R.T. NightingalePage 1 of 33 revealed that more work is required to improve the prediction accuracy in realistic situations.

Modeling vibrational energy transmission at bolted junctions between a plate and a stiffening rib

“…At this frequency, an anti-resonance of the stiffening rib significantly reduces the rotation of the junction, leading to a reduction in bending wave transmission. 15 The predicted data also show a maximum in the VLD, but its location is shifted to a higher frequency. The measured results also show a less pronounced maximum at 315 Hz, which is not predicted by the model.…”

“…The equilibrium and continuity conditions derived from Eqs. (12)(13)(14)(15) and (17)(18)(19)(20) are combined with Eq. (6) to create a set of equations in the unknown wave amplitudes.…”

“…The rib was not included in the SEA model, since its influence was taken into account when calculating the coupling loss factors. 15 Further, in-plane wave subsystems were not considered since their influence is only important for complex structures involving many junctions and long transmission paths. 21 Strong coupling effects, which might bias SEA predictions for two nominally identical rectangular plates, are not expected to be important since the modal overlap factors of both bending wave subsystems exceed unity above 160 Hz.…”

“…Langley et al 13 15 for predicting structure-borne sound transmission across a line connected stiffening rib in an orthotropic plate. Craik et al 16 applied a plate strip model to predict vibration transmission between the leafs of light-weight walls.…”

Vibration Response of Lightweight Wood Frame Building Elements

“…This approach suggests that the transition between line-and point-connected regimes will occur between 200-250 Hz for the 16 mm thick OSB that has a Young's Modulus of 1.53x10 9 Pa in the direction parallel to the joist. In reality, the transition frequency occurs at higher frequencies because the fastening is not an ideal point connection and there is a finite contact area 5 . This makes the fasteners appear closer and tends to shift the transition to higher frequencies.…”