Physical Acoustics Analysis of Composite Wooden Panel and Room by Computational Modeling

Abstract

This research is to analyze the factors that cause the distortion of the sound and to make the sound more propagable with the use of wooden acoustic panels (WAP) by the finite element analysis (FEA) in a closed room. The structural modeling-FEA has become the leading technique with the fluid-structure interaction (FSI) used to systematically analyze multi-physics events of how fluids and structures interact for acoustics as well as to solve structural problems for reverberation - sound pressure problems. The displacement-based nonlinear Lagrangian method was used for the acoustic fluid and material structure interaction behavior by FEA to manage the problem of FSI. Under laboratory conditions, the acoustic response of a composite WAP (ASTM E-84) and ceiling was experimentally studied and compared by computational models. This research enabled the designer to create a three-dimensional acoustic model of a WAP with full acoustic qualities for all surfaces to enhance the sound transmission by ANSYS-v.2020. The promising results showed that the consideration of the dominant fluid-fiber direction and sound absorption is of importance.