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Experimental Structural Acoustic investigation of a lightweight floor structure

Sjöström, Anders LU ; Bard, Delphine LU ; Persson, Kent LU and Sandberg, Göran LU (2010) EAA EUROREGIO 2010
Abstract
A common floor construction in a lightweight building system is using chipboard plates attached to wooden beams using screws and glue. One drawback with such a system is the propagation of vibrations stemming either from harmonic (washing machines, dishwashers, HiFi-systems) especially at low frequencies and/or transient (Human walking, dropped items, slamming doors) excitations. In order to accurately predict the sound attenuation and the losses of such building systems, computationally accurate and efficient simulation techniques are needed.

The main objective of this work is to examine sandwiched floor constructs consisting of one and two layers of chipboards attached to supporting wooden beams. Of special interest are the... (More)
A common floor construction in a lightweight building system is using chipboard plates attached to wooden beams using screws and glue. One drawback with such a system is the propagation of vibrations stemming either from harmonic (washing machines, dishwashers, HiFi-systems) especially at low frequencies and/or transient (Human walking, dropped items, slamming doors) excitations. In order to accurately predict the sound attenuation and the losses of such building systems, computationally accurate and efficient simulation techniques are needed.

The main objective of this work is to examine sandwiched floor constructs consisting of one and two layers of chipboards attached to supporting wooden beams. Of special interest are the effects of the discontinuities between adjacent boards and between the boards and beams on the loss of kinetic energy as a consequence of the evanescent wave propagation due to the acoustic attenuation process in the structure and on the phase shift of the waves as they travel past the different types of discontinuities in the floor assembly.

The measurements are performed using two-axis accelerometers distributed over the floor and recorded synchronously. The measurements are focused in the low frequency range (10-600Hz) and are also including transient loads. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
submitted
subject
keywords
Accelerometers, Discontinuities, Sandwiched floor, Finite element modeling, Measurements, Attenuation, Vibrations, Lightweight floor assemblies
pages
6 pages
conference name
EAA EUROREGIO 2010
language
English
LU publication?
yes
id
0ccde84b-735f-4f1e-ba81-6e355c53bbe8 (old id 1665883)
date added to LUP
2010-09-01 15:32:47
date last changed
2016-04-16 11:09:07
@misc{0ccde84b-735f-4f1e-ba81-6e355c53bbe8,
  abstract     = {A common floor construction in a lightweight building system is using chipboard plates attached to wooden beams using screws and glue. One drawback with such a system is the propagation of vibrations stemming either from harmonic (washing machines, dishwashers, HiFi-systems) especially at low frequencies and/or transient (Human walking, dropped items, slamming doors) excitations. In order to accurately predict the sound attenuation and the losses of such building systems, computationally accurate and efficient simulation techniques are needed.<br/><br>
The main objective of this work is to examine sandwiched floor constructs consisting of one and two layers of chipboards attached to supporting wooden beams. Of special interest are the effects of the discontinuities between adjacent boards and between the boards and beams on the loss of kinetic energy as a consequence of the evanescent wave propagation due to the acoustic attenuation process in the structure and on the phase shift of the waves as they travel past the different types of discontinuities in the floor assembly.<br/><br>
The measurements are performed using two-axis accelerometers distributed over the floor and recorded synchronously. The measurements are focused in the low frequency range (10-600Hz) and are also including transient loads.},
  author       = {Sjöström, Anders and Bard, Delphine and Persson, Kent and Sandberg, Göran},
  keyword      = {Accelerometers,Discontinuities,Sandwiched floor,Finite element modeling,Measurements,Attenuation,Vibrations,Lightweight floor assemblies},
  language     = {eng},
  pages        = {6},
  title        = {Experimental Structural Acoustic investigation of a lightweight floor structure},
  year         = {2010},
}