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Article

Development of a Vibroacoustic Stochastic Finite Element Prediction Tool for a CLT Floor

1
Department of Applied Sciences, University of Québec at Chicoutimi, Chicoutimi, QC G7H2B1, Canada
2
Division of Engineering Acoustics, Department of Construction Sciences, Lund University, 22362 Lund, Sweden
3
Saint-Gobain Ecophon Spain, 28020 Madrid, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(6), 1106; https://doi.org/10.3390/app9061106
Received: 31 January 2019 / Revised: 2 March 2019 / Accepted: 8 March 2019 / Published: 15 March 2019
(This article belongs to the Special Issue Modelling, Simulation and Data Analysis in Acoustical Problems)
Low frequency impact sound insulation is a challenging task in wooden buildings. Low frequency prediction tools are needed to access the dynamic behavior of a wooden floor in an early design phase to ultimately reduce the low frequency impact noise. However, due to the complexity of wood and different structural details, accurate vibration predictions of wood structures are difficult to attain. Meanwhile, a deterministic model cannot properly represent the real case due to the uncertainties coming from the material properties and geometrical changes. The stochastic approach introduced in this paper aims at quantifying the uncertainties induced by material properties and proposing an alternative calibration method to obtain a relative accurate result instead of the conventional manual calibration. In addition, 100 simulations were calculated in different excitation positions to assess the uncertainties induced by material properties of cross-laminated-timber A comparison between the simulated and measured results was made in order to extract the best combination of Young’s moduli and shear moduli in different directions of the CLT panel. View Full-Text
Keywords: wooden constructions; acoustics; low frequency noise; modelling wooden constructions; acoustics; low frequency noise; modelling
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MDPI and ACS Style

Qian, C.; Ménard, S.; Bard, D.; Negreira, J. Development of a Vibroacoustic Stochastic Finite Element Prediction Tool for a CLT Floor. Appl. Sci. 2019, 9, 1106. https://doi.org/10.3390/app9061106

AMA Style

Qian C, Ménard S, Bard D, Negreira J. Development of a Vibroacoustic Stochastic Finite Element Prediction Tool for a CLT Floor. Applied Sciences. 2019; 9(6):1106. https://doi.org/10.3390/app9061106

Chicago/Turabian Style

Qian, Cheng, Sylvain Ménard, Delphine Bard, and Juan Negreira. 2019. "Development of a Vibroacoustic Stochastic Finite Element Prediction Tool for a CLT Floor" Applied Sciences 9, no. 6: 1106. https://doi.org/10.3390/app9061106

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