Resonances in rooms and other closed cavities can be found. This is useful to
ensure mechanical vibrations don't set up strong standing waves in vehicle
cabins, etc.
Acoustic elements
2D
- »3 & 6 node, triangle
- »4 & 8 node, quadrilateral
3D volume
- »4 node, tetrahedron
- »8 node, hexahedron
Acoustic analysis
Modeling
- » finds resonant modes
- » only closed boundary problems, no leakages e.g through open windows
- » solves the Helmholtz equation representing acoustic vibrations of an enclosed body of fluid
Results
- » color contour plot
- » animation of the pressure oscillations