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Tuesday, July 9 • 16:30 - 16:50
ANALYSIS OF THE ACOUSTIC CHARACTERISTICS OF CROSS-LAMINATED TIMBER PANELS USING A WAVE AND FINITE ELEMENT METHOD

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This paper presents an analysis of the acoustic characteristics of Cross-Laminated Timber panels using a Wave and Finite Element (WFE) method. The WFE method involves first creating a finite element (FE) model of a small segment of the panel which is post-processed to determine the characteristics of wave propagation in the structure and predict the sound transmission through the panel. Two different FE models are investigated. The first models each CLT layer as a homogeneous orthotropic layer, the second models the entire panel as a homogenous orthotropic panel. The second model is equivalent to analytic models which have been proposed for modelling the vibroacoustic behavior of CLT panels. The WFE analysis is used to show that both models predict similar vibroacoustic behavior at low frequencies, but differences are observed at higher frequencies.

Moderators
JM

Jeffrey Mahn

Research Officer, National Research Council Canada

Authors

Tuesday July 9, 2019 16:30 - 16:50 EDT
St-Laurent 4
  T11 Room & build. acoustics, SS03 Measur & predict of snd insul