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Modelling Prerequisites – FEM/SEA Impact and Airborne Sound

https://research.thinkwood.com/en/permalink/catalogue840
Year of Publication
2017
Topic
Acoustics and Vibration
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Floors
Walls
Author
Bard, Delphine
Negreira, Juan
Guigou-Carter, Catherine
Borello, Gerard
Kouyoumji, Jean-Luc
Speranza, Alice
Coguenanff, Corentin
Hagberg, Klas
Organization
Silent Timber Build
Year of Publication
2017
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Floors
Walls
Topic
Acoustics and Vibration
Keywords
Europe
Finite Element Model
Frequencies
SEA Model
Prediction
Impact Sound Insulation
Airborne Sound Insulation
Research Status
Complete
Summary
This report comprises reslts from the work done within work package 1 in the WWN+ project "Silent Timber Build", WP 1: Prediction tools, low and high frequencies. The aim from this WP was to develop prediction tools applied for wooden constructions. Included in this is also to create necessary basis for enough accuracy for any European wood construction. It implies development of new methods but also to understand how input forces primarily from the tapping machine affects the resuts of impact sound levels. The WP also describes how models are developed, in order to provide expected accuracy and then how to further improve the models in order to optimize floor and wall assemblies. The Work Package has been closely linked to WP 2 but also WP3. Using the reults from WP 2, the prediction model results can be compared to expected values for any European construction. From that optimization of floor assemblies and refining of the model is possible.
Online Access
Free
Resource Link
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Sound Insulation Performance of Cross Laminated Timber Building Systems

https://research.thinkwood.com/en/permalink/catalogue342
Year of Publication
2013
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Schoenwald, Stefan
Zeitler, Berndt
Sabourin, Ivan
King, Frances
Organization
Inter-noise
Year of Publication
2013
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Acoustics and Vibration
Keywords
Airborne Sound Insulation
Acoustic Performance
Conference
Inter-noise 2013
Research Status
Complete
Notes
September 15-18, 2013, Innsbruck, Austria
Summary
In recent years Cross Laminated Timber (CLT) was introduced as an emerging building system in the North American market. CLT elements consist of multiple layers of wooden beams that are laid-out cross-wise and laminated together to form solid wood panels for floors and walls. As part of a multi-disciplinary research project a comprehensive study was conducted on the impact and airborne sound insulation of this type of elements in order to create a data base that allows building designers to predict the acoustic performance of CLT systems. Parametric studies were carried out on the direct impact airborne sound insulation of CLT floor assemblies (with/ without various floor topping and gypsum board ceiling variants), on the direct airborne sound insulation of CLT walls (with/without gypsum board linings), as well as on the structure-borne sound transmission on a series of CLT building junctions. The results were then used as input data for predictions of the apparent impact and airborne sound insulation in real CLT buildings using the ISO 15712 (EN12354) framework that was originally developed for concrete and masonry buildings. The paper presents the prediction approach as well as results of prediction and measurement series for apparent impact and airborne sound insulation.
Online Access
Free
Resource Link
Less detail