/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/10.3813/AAA.918439 Acta Acustica United with Acustica, 97, 4, pp. 590-598, 2011-07-01 Prediction of the blocked force at impact of Japanese rubber ball source Schoenwald, S.; Zeitler, B.; Nightingale, T. R. T. Abstract: Characterizing and rating the impact sound isolation of floors and of building structures are important issues in building acoustics. In all standardized test procedures a floor specimen is excited structurally with a standardized impact source and the sound pressure level due to the impact is measured in an adjacent room. Existing standards define several impact sources that should simulate the excitation due to persons walking or jumping on the floor and hence exert only normal forces to the structure. However, the excitation spectrum of the most commonly used lightweight tapping machine according to ISO 140-7 differs significantly from the heavy impact sources according to JIS A 1418-2 (the "rubber ball" and the "bang machine" that are dropped from a defined height to the floor). In order to accurately predict the impact sound isolation of floor assemblies, the excitation mechanism due to impacts from these heavy sources has to be understood and implemented in prediction models. This paper presents a simple analytical model for the "rubber ball" heavy impact source and the suitability of the model is gauged by comparing the predicted blocked force with experiment. Pre dic t ion of t he bloc k e d forc e a t im pa c t of J a pa
/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. America, 101, 2, pp. 964-969, 1997-02-01 Sound transmission through a double leaf partition with edge flanking Craik, R. J. M.; Nightingale, T. R. T.; Steel, J. A. Lightweight double leaf partitions are widely used and with proper design give good sound isolation. However, when these walls are used as party walls between dwellings, then precautions are necessary to prevent the transmission of fire and smoke. This is usually carried out by placing a firestop in the cavity. This firestop introduces flanking transmission paths reducing the airborne transmission loss of the wall. A simple model is developed which can predict vibration transmission across this type of structural connection. The structural vibration transmission loss can then be used with a more general statistical energy analysis model to give the sound transmission through the entire system. Predicted airborne transmission loss results for a variety of different materials are compared with measured results and good agreement is obtained. Journal of the Acoustical Society of
There is strong interest in being able to predict the apparent sound insulation in completed constructions so that the suitability of the construction details and materials may be assessed at the design stage. Methods do exist that provide estimates of the apparent sound insulation. An example of which is SEA. However, this method is likely too complex to be suitable for most practitioners and consultants as it relies heavily on the user to model the transmission mechanisms from first principles. Thus, from a practitioner's point of view, a model that makes use of commonly available data for the acoustic performance of building products and elements-as measured by standardised laboratory measurement methods ISO 140-and relates this to the acoustic performance in the completed buildings would be more useful. In response to this, CEN has started to create prediction models for several acoustic aspects in buildings beginning with separate models for the apparent airborne sound insulation and the apparent impact sound insulation. Practical models that allow the prediction of the sound reduction of the individual flanking paths in heavy monolithic constructions are now available (EN 12354-1 for the apparent airborne sound insulation and EN 12354-2 for the apparent impact sound insulation). A new quantity has been introduced in these models to characterise the structure-borne sound transmission at junctions of building elements. Work is now focusing on reliable input data to these models, describing measurement methods to determine the junction quantity, extending application to constructions that are not heavy and monolithic, and verifying the accuracy of the models. Further work is concentrating on models for other aspects such as facade sound transmission from outside to inside and vice-versa and the sound levels caused by mechanical equipment in buildings. This paper provides an overview of prediction models in building acoustics as an introduction to the special session at the Forum Acusticum 1999 in Berlin.
/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.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.