The finite element analysis can simulate the vibro-acoustic behavior of a panel. It is therefore possible to evaluate the airborne sound insulation according to the norm at an early stage of development through virtual prototyping.
In this example, the panel divides two reverberant chambers. In one of the two chambers is introduced a source of acoustic power. Therefore, the acoustic pressures on both sides of the panel are measured to evaluate the airborne sound insulation.

Finite element model of two reverberant chambers separated by a sound insulating panel (not shown in the diagram).

The color map indicates the intensity of the sound pressure generated within the two chambers. The source is located in the left chamber.

Sound pressure levels calculated on both sides of the panel in the two reverberant chambers. Red color is for the pressure inside the source chamber, blue color is for the pressure in the receiving chamber.

Acoustics:

• Vibro-acoustic simulation
• Computing of sound insulation of a panel
• Acoustic intensity maps