Dickow K., A.

Transmission of Sound Through Double-Plate Panel Structures - A Numerical Study of Coupling Parameters in Lightweight Panel Structures

Abstract eng:
In the present paper, a finite-element model of a double-plate panel is implemented to investigate the transmission of sound through a simple lightweight structure. A numerical study is performed of the following three coupling configurations: 1) Structure-borne sound via plate-stud-plate structures without air inclusions; 2) transmission via the plate-stud-plate structure including the internal acoustic medium; 3) transmission via plate-air-plate connections in a double-leaf panel with no structural coupling between the two plates. A fully coupled analysis is performed in which solid finite elements are adopted for the structure, whereas the acoustic medium is discretized into fluid continuum elements. The computations are carried out in frequency domain in the low frequency range and the load acts as a diffuse sound field on one side of the panel.

Contributors:

Kirkegaard P., H.

Publisher:

National Technical University of Athens, 2011

Conference Title:

Computational Methods in Structural Dynamics and Earhquake Engineering

Conference Title:

COMPDYN 2011 - 3rd International Thematic Conference

Conference Venue:

Island of Corfu (GR)

Conference Dates:

2011-05-25 / 2011-05-28