Challenges for acoustic calculation models in "silent timber build", Part 1- FEM

Bard, DelphineLund University,Lunds universitet,Teknisk akustik,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Engineering Acoustics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH (author)

The project "Silent Timber Build" will develop new prediction tools for timber structures. There are several challenges that have to be overcome to provide a full prediction tool. The differences in weight, stiffness and density for wooden structures compared to traditional, heavy and more homogeneous structural material have repercussions on how the sound propagates throughout the structures, affecting the sound and vibration insulation performance and also theories to be used in prediction models. Finite element simulations have proved to be useful in the design phase in a certain low and very low frequency range. By further developing reliable finite element tools for low frequencies, the performance of future wooden constructions can be predicted in a full frequency range, saving both time and money as all calculations, and modifications can be done during the design phase. However the upper limit for using FEM has to be further investigated and then be merged with statistical methods. This article, following another article Part 2, will focus on medium and high frequency range calculations. For full-scale building, Virtual SEA method, as analytic and SEA approaches will be used in frequencies low enough in order to optimize the overlap to FEM.

Negreira, JuanLund University,Lunds universitet,Teknisk akustik,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Engineering Acoustics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)cons-jmn (author)
Kouyoumji, Jean LucFrench Institute of Technology for Forest-based and Furniture Sectors (FCBA) (author)
Borello, GérardInterAC (author)
Guigou, CatherineScientific and Technical Center for Building (CSTB) (author)
Davy, John (editor)
Burgess, Marion (editor)
Don, Charles (editor)
Dowsett, Liz (editor)
McMinn, Terry (editor)
Broner, Norm (editor)
Teknisk akustikInstitutionen för byggvetenskaper (creator_code:org_t)

In:INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering : Improving the World Through Noise Control - Improving the World Through Noise Control, s. 4424-442997816343980919780909882037

By the author/editor: Bard, Delphine; Negreira, Juan; Kouyoumji, Jean ...; Borello, Gérard; Guigou, Catherin ...; Davy, John; show more...; Burgess, Marion; Don, Charles; Dowsett, Liz; McMinn, Terry; Broner, Norm; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Building Technol ...

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