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.

See Settings for further details about Label and Name.

The default Name (for the first multiphysics coupling feature in the model) is psb1.

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.

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 porous material. The second option, represents a case with only coupling in the normal direction; this can represent a case where the porous material is placed on to or next to the solid.