Piezoelectric-Acoustic Tab

Setting Item

Notes

Piezoelectric Analysis Type

Harmonic Analysis

Solves the response to sinusoidal load, AC voltage, and AC current.

Harmonic analysis is adopted in the acoustic solver as well.

Resonant Analysis

Solves the mechanical resonance and the electric resonance. For the acoustic solver, harmonic analysis is driven by the resonant frequency of the piezoelectric solver.

Transient Analysis

Solves physical state that changes over time both in the piezoelectric analysis and acoustic analysis.

Transient mode only applicable in the piezoelectric-acoustic coupled analysis is [transient analysis using resonant mode].

Therefore, [transient analysis using resonant mode] is selected by default.

This analysis is not supported in the axisymmetric analysis.

Analysis Plane

To perform the 2D analysis, select either one below.

2D Cross Section

Applicable to the vibrators relatively thicker than the plate dimension. It corresponds to the plane strain of the stress analysis.

Plane Stress
Applicable for the vibrators relatively thiner than the plate dimension. The displacement is in parallel to the plate.

Variables to Constrain

The piezo-vibration has four freedoms: the X/Y/Z/ displacement and the electric potential.

Constrain the freedom which is known to be 0 from the beginning.

The calculation time will be shortened, as the unnecessary calculation can be omitted.

Constrain the Y-direction displacement in the 2D analysis, as there is no displacement in Y direction.

In the case of SH waves, however, leave the Y direction free as some modes have the vibration in the depth direction.

The displacement cannot be constrained in the 3D analysis.

Constrain the electric potential for the non-piezo, pure elastic body, as there is no electric potential involved.

Options

Notes

Fully-coupled Analysis

Takes the resistance from acoustic domain into account for the piezoelectric vibration. Note that the computational complexity increases in the fully-coupled analysis.

Acceleration

See Piezoelectric Analysis Tab for the details.

Angular Velocity

See Piezoelectric Analysis Tab for the details.

Analysis with Initial Stress Taken into Account

See Piezoelectric Analysis Tab for the details.

Transient Analysis Using Resonant Mode

Preselected in the piezoelectric-acoustic coupled analysis.

Also, see Piezoelectric Analysis Tab for the details.

Incident Plane Wave (acoustic analysis domain)

Available only for the harmonic analysis.
If selected, the incident wave can be set on the [Incident Wave (plane wave)] tab.

Setting Item

Notes

Calculate directivity when running solver

See Acoustic Analysis Tab for the details.

Calculate loss (Acoustic Analysis Domain)

See Acoustic Analysis Tab for the details.

Results Graph

See Piezoelectric Analysis Tab for the details.