Normal Displacement

Normal Displacement

The adds an inward normal displacement dn, which is assumed to be harmonically oscillating:

Alternatively, specify the acceleration d0 of the boundary. The part in the normal direction is used to define the boundary condition:

This feature represents an external source term. It can also be used to manually couple acoustics with a structural analysis for modeling acoustic-structure interaction.

Normal displacement

Select a : (the default) or .

•

For enter the value of the dn (SI unit: m). Use a positive value for inward displacement or a negative value for outward displacement.

For enter values for the components of the d0 (SI unit: m).