The Piezoelectricity, Layered Shell interface (
) combines structural layered shells and electric currents in shells together with the constitutive relationships required to model the direct and inverse piezoelectric effects. The piezoelectric coupling can be formulated using either the strain-charge or stress-charge forms.
When a predefined Piezoelectricity, Layered Shell interface is added from the
Structural Mechanics branch (
) of the
Model Wizard or from
Add Physics windows,
Layered Shell and
Electric Currents in Layered Shells interfaces are added to the Model Builder.
In addition, the Multiphysics node is added, which automatically includes the multiphysics coupling feature
Piezoelectricity, Layered.
The Layered Shell interface includes a
Piezoelectric Material feature. The
Electric Currents in Layered Shells interface includes a
Piezoelectric Layer feature with similar settings. Such features can be also added manually to their corresponding interfaces similar to any other material model therein.
The Piezoelectricity, Layered multiphysics coupling node can be active only on the selection, where both features
Piezoelectric Material and
Piezoelectric Layer are active.
When physics interfaces are added using the predefined couplings, for example Piezoelectricity, Layered Shell, specific settings are included with the physics interfaces and the coupling features.
For example, if both Layered Shell and
Electric Currents in Layered Shells interfaces are added, COMSOL Multiphysics adds an empty
Multiphysics node. You can add the available coupling feature
Piezoelectricity, Layered but the modified settings are not included.
The Piezoelectricity, Layered coupling node is used to couple the interfaces.
Additional nodes and subnodes available with this multiphysics interface are described with the interfaces where they are available. Coupling Loss,
Dielectric Loss, and
Mechanical Damping subnodes are available for Piezoelectric Material under the Layered Shell interface. The
Piezoelectric Layer feature is described for the Electric Currents in Layered Shells interface.