Porous–Structure Boundary
The Porous–Structure Boundary coupling () is used to couple a porous domain (Biot’s model) domain from the Poroelastic Waves interface to a Solid Mechanics, Shell, Layered Shell, Membrane, or Multibody Dynamics interface. At the solid-porous boundaries, continuity of the displacement field is applied.
In 2D components, it is possible to define the out-of-plane thickness for the structural interfaces while in acoustics this thickness effectively is unity (set to 1 m). A rescaling is automatically performed for the pressure load to account for this interpretation difference in 2D.
Settings
See Settings for further details about Label and Name.
The default Name (for the first multiphysics coupling feature in the model) is psb1.
Coupled Interfaces
This section defines the physics involved in the multiphysics coupling. The Porous media and Structure lists include all applicable physics interfaces. See the Coupled Interfaces in Acoustic–Structure Boundary for details.
Coupling
Select Coupling as either Perfect bonding (the default) or Imperfect bonding. The first option represent a scenario where the solid is glued or bonded to the porous material. The second option represents a case with coupling only in the normal direction; this can represent a case where the porous material is placed on or next to the solid.
Acoustics of a Particulate-Filter-Like System. Application Library path Acoustics_Module/Automotive/acoustics_particulate_filter