Effect of material parameter variability on vibroacoustic response in wood floors

TY - JOUR

T1 - Effect of material parameter variability on vibroacoustic response in wood floors

AU - Persson, Peter

AU - Flodén, Ola

PY - 2019/3

Y1 - 2019/3

N2 - The use of wood as construction material in multi-story buildings increased in Europe during the last decades. Wood buildings are more sensitive to dynamic loading compared to conventional concrete buildings, especially in terms of vibroacoustic comfort. Furthermore, it is more difficult to predict the accurate response due to dynamic loading for wood buildings. This is due to factors such as a complex structure involving many connections which vary in their mechanical behavior and the variability in the material parameters of wood. In the study, a reduced-order finite element model correlated to measurement data is used to examine the effect of experimentally obtained variability in material parameters on the vibroacoustic response of a wooden floor. The floor is subjected to surface loading. Monte Carlo simulations are conducted and in order to execute the probabilistic analysis in an efficient manner, the use of various sampling techniques is investigated. It was concluded that the variability in material parameters of wood significantly affects the predicted low-frequency vibrations, and thereby also affects the transmission of structure-borne sound.

AB - The use of wood as construction material in multi-story buildings increased in Europe during the last decades. Wood buildings are more sensitive to dynamic loading compared to conventional concrete buildings, especially in terms of vibroacoustic comfort. Furthermore, it is more difficult to predict the accurate response due to dynamic loading for wood buildings. This is due to factors such as a complex structure involving many connections which vary in their mechanical behavior and the variability in the material parameters of wood. In the study, a reduced-order finite element model correlated to measurement data is used to examine the effect of experimentally obtained variability in material parameters on the vibroacoustic response of a wooden floor. The floor is subjected to surface loading. Monte Carlo simulations are conducted and in order to execute the probabilistic analysis in an efficient manner, the use of various sampling techniques is investigated. It was concluded that the variability in material parameters of wood significantly affects the predicted low-frequency vibrations, and thereby also affects the transmission of structure-borne sound.

U2 - 10.1016/j.apacoust.2018.10.034

DO - 10.1016/j.apacoust.2018.10.034

M3 - Article

VL - 146

SP - 38

EP - 49

JO - Applied Acoustics

JF - Applied Acoustics

SN - 0003-682X

ER -