The Piezoelectric Material node defines the piezoelectric material properties either in stress-charge form using the elasticity matrix and the coupling matrix, or in strain-charge form using the compliance matrix and the coupling matrix. It is normally used together with a
Layered Piezoelectric Effect multiphysics coupling node and a corresponding
Piezoelectric Layer node in the
Electric Currents in Layered Shells interface. This node is added by default to the
Layered Shell interface when adding a
Piezoelectricity, Layered Shell multiphysics interface.
When working with layered shells, you almost invariably take the material data from what has been defined using Layered Material Link,
Layered Material Stack, or
Single Layer Material nodes. It is however possible to override some data from a
Piezoelectric Material node too.
By adding the following subnodes to the Piezoelectric Material node you can incorporate many other effects:
Select a Constitutive relation —
Stress-charge form or
Strain-charge form. For each of the following, the default uses values
From material. For
User defined enter other values in the matrix or field as needed.
If any material in the model has a temperature dependent mass density, and From material is selected, the
Volume reference temperature list will appear in the
Model Input section. As a default, the value of
Tref is obtained from a
Common model input. You can also select
User defined to enter a value or expression for the reference temperature locally.