About Acoustic Couplings

An acoustic coupling creates a tie constraint between the mesh in an acoustic domain and the mesh in the surrounding structural domain.

See Also
Defining Acoustic Couplings

The degrees of freedom enforced for the acoustic coupling depend on the types of surfaces you choose. You can choose an acoustic domain mesh or a structural domain mesh for either surface, and your selection determines the degrees of freedom that are tied in the coupling:

  • If both the main and secondary surfaces are meshes in the acoustic domain, the coupling restricts acoustic pressure.
  • If the main surface is a mesh in the structural domain and the secondary surface is a mesh in the acoustic domain, the coupling restricts translations.
  • If the main surface is a mesh in the acoustic domain and the secondary surface is a mesh in the structural domain, the coupling restricts acoustic pressure.