Experiments and FE Analyses on Airborne Sound Properties of Composite Structural Insulated Panels

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Authors

  • Adam WAWRZYNOWICZ Gdańsk University of Technology, Poland
  • Marek KRZACZEK Gdańsk University of Technology, Poland
  • Jacek TEJCHMAN Gdańsk University of Technology, Poland

Abstract

Airborne acoustic properties of composite structural insulated panels CSIPs composed of fibre-magnesium-cement facesheets and expanded polystyrene core were studied. The sound reduction ratings were measured experimentally in an acoustic test laboratory composed of two reverberation chambers. The numerical finite element (FEM) model of an acoustic laboratory available in ABAQUS was used and verified with experimental results. Steady-state and transient FE analyses were performed. The 2D and 3D modelling FE results were compared. Different panel core modifications were numerically tested in order to improve the airborne sound insulation of CSIPs.

Keywords:

acoustic properties, composite structural insulated panel, sound insulation, finite element method, steady-state analysis, transient analysis.