Challenges for acoustic calculation models in "Silent Timber Build", Part 2

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

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. The project will use Finite element simulations (FEM) and Statistical Energy Analysis (SEA) approaches to predict acoustical behavior of light weight timber constructions. This article, following another article Part 1, will focus on medium and high frequency range calculations. Statistical methods will be used in the medium and high frequency, where the acoustic performance of wooden building components (walls and floors) is generally limited by the presence of structural links and couplings. Statistical Energy Analysis (SEA) has proven to be an efficient approach, providing robust vibroacoustic models in this frequency region. The extension of statistical methods towards the low frequencies has to be evaluated, especially regarding time responses of impact noise on floor systems. For full-scale building, Virtual SEA method will be used as well as analytic SEA approach in frequencies low enough in order to optimize the overlap to FEM.

Details

Authors
Organisations
External organisations
  • French Institute of Technology for Forest-based and Furniture Sectors (FCBA)
  • InterAC
  • Scientific and Technical Center for Building (CSTB)
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Building Technologies

Keywords

  • FEM, Insulation, Modeling, SEA, Sound, Transmission, VSEA
Original languageEnglish
Title of host publication43rd International Congress on Noise Control Engineering (INTERNOISE 2014)
Subtitle of host publicationImproving the World Through Noise Control
EditorsJohn Davy, Marion Burgess, Charles Don, Liz Dowsett, Terry McMinn, Norm Broner
PublisherAustralian Acoustical Society
Pages3054-3061
ISBN (Electronic)9780909882037
ISBN (Print)9781634398091
Publication statusPublished - 2014 Jan 1
Publication categoryResearch
Peer-reviewedYes
Event43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014: Improving the World Through Noise Control - Melbourne, Melbourne, Australia
Duration: 2014 Nov 162014 Nov 19
Conference number: 43

Conference

Conference43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
Abbreviated titleINTERNOISE 2014
CountryAustralia
CityMelbourne
Period2014/11/162014/11/19