BOUNDARY
CONDITIONS
Polarization/Local
Axes
High voltage should be applied on the center
surface of the PZT two layers, and Ground on the metal endcap.
Choose the polarization direction along the electric field direction.
Data -> Conditions -> Volumes -> Geometry -> Polarization
(Cartesian) -> Define Polarization (P1) (0,0,1) direction
Choose 3PointsXZ -> Center (0,0,0) -> Define X axis by putting
(1,0,0) -> Then
define Z axis by putting (0,0,1) -> Escape
Assign Polarization (Local-Axes P1) -> Choose the PZT volume
-> Finish
Potential
Data -> Conditions -> Surfaces -> Potential 0.0 (or Ground
in ATILA 5.2.4 or higher version) -> Assign the top surface of
the PZT -> Forced
Potential 1.0 -> Assign the bottom surface
Surface
Contraints (1/8 part of the whole Cymbal)
We use only 1/8 part of the whole Cymbal,
taking into account the symmetry; the bottom surface of the PZT
disk - Z compoent is clamped, while X and Y components are free.
Data -> Conditions -> Surfaces -> Surface Constraints -> Z
components -> Clamped -> Assign the bottom PZT surfaces
Similarly, the edge on the X axis -> Surface
Contstraints -> Y components -> Clamped -> Assign
The edge on the Y axis -> Surface Contraints
-> X components -> Clamped -> Assign
To check the assignment -> Draw -> All
conditions -> Include local axes
MESHING 
Cant view is not very suitable to
Meshing -> View -> Rotate -> Plane xy (original)
Mapped Mesh
Meshing -> Structured -> Volumes -> Select all
volumes -> Then Cancel the further process
Meshing -> Structured -> Lines -> Enter number to divide line
-> Choose "1"
for the lines -> Generate
Use the higher number such as 2 or
4 for the higher accurate calculation.