Advanced

A finite element solution of structure-borne sound attenuation for a lightweight timber floor

Bard, D. LU ; Sonnerup, J. LU and Sandberg, G. LU (2008) In Building Acoustics 15(2). p.137-152
Abstract

Structure-borne sound attenuation of lightweight timber floor structures has been investigated by high-resolution numerical calculation methods. Two models have been studied both experimentally and numerically. The first considers a continuous chipboard plate and a supporting beam. The second considers two plates that are fastened on one beam. Damping effects, which arise from the two different discontinuities, are included. The real-valued modulus of elasticity is replaced with a complex value. In the calculations, the orthotropic material characteristics of the building material have also been taken into account. The results from the calculations and laboratory measurement confirm that the attenuation rate is highly dependent on the... (More)

Structure-borne sound attenuation of lightweight timber floor structures has been investigated by high-resolution numerical calculation methods. Two models have been studied both experimentally and numerically. The first considers a continuous chipboard plate and a supporting beam. The second considers two plates that are fastened on one beam. Damping effects, which arise from the two different discontinuities, are included. The real-valued modulus of elasticity is replaced with a complex value. In the calculations, the orthotropic material characteristics of the building material have also been taken into account. The results from the calculations and laboratory measurement confirm that the attenuation rate is highly dependent on the excitation location, if all the other parameters remain the same.

(Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Damping, Finite element formulations, Structure-borne sound, T junctions
in
Building Acoustics
volume
15
issue
2
pages
16 pages
publisher
Multi-Science Publishing
external identifiers
  • scopus:70949105033
ISSN
1351-010X
DOI
10.1260/135101008785082498
language
English
LU publication?
yes
id
efbf66ef-12aa-4a5e-8fef-ee1853692e99
date added to LUP
2019-05-21 15:34:31
date last changed
2020-02-26 07:25:56
@article{efbf66ef-12aa-4a5e-8fef-ee1853692e99,
  abstract     = {<p>Structure-borne sound attenuation of lightweight timber floor structures has been investigated by high-resolution numerical calculation methods. Two models have been studied both experimentally and numerically. The first considers a continuous chipboard plate and a supporting beam. The second considers two plates that are fastened on one beam. Damping effects, which arise from the two different discontinuities, are included. The real-valued modulus of elasticity is replaced with a complex value. In the calculations, the orthotropic material characteristics of the building material have also been taken into account. The results from the calculations and laboratory measurement confirm that the attenuation rate is highly dependent on the excitation location, if all the other parameters remain the same.</p>},
  author       = {Bard, D. and Sonnerup, J. and Sandberg, G.},
  issn         = {1351-010X},
  language     = {eng},
  month        = {06},
  number       = {2},
  pages        = {137--152},
  publisher    = {Multi-Science Publishing},
  series       = {Building Acoustics},
  title        = {A finite element solution of structure-borne sound attenuation for a lightweight timber floor},
  url          = {http://dx.doi.org/10.1260/135101008785082498},
  doi          = {10.1260/135101008785082498},
  volume       = {15},
  year         = {2008},
}