Home / Examples / Piezoelectric Analysis [Rayleigh] / Example 5: Acceleration

Example 5: Acceleration

General

• The model is a bar consisting of a metal plate and a piezoelectric plate stacked. An acceleration is applied to the bar, causing deformation.
   

• The electric potential of floating electrode and the displacement are solved.
   

• Unless specified in the list below, the default conditions will be applied.
   

• Obtain this session's project file. (Right-click and choose 'Save link as')




• Results will vary depending on Femtet version and the PC environment.

 

Analysis Space

Item	Settings
Analysis Space	3D
Model Unit	mm

 

Analysis Conditions

Item	Settings
Solver	Piezoelectric Analysis [Rayleigh]
Analysis Type	Static Analysis
Options	Select [Acceleration].

 

The acceleration tab is set up as follows.

Tab	Setting Item	Settings
Acceleration	Acceleration	X=Y=0.0, Z=-9.8 [m/s2]

It is accelerated in the negative Z direction.

Model

The piezoelectric and metal bars are piggybacked. The top face of the piezoelectric bar is the floating electrode (hot).

The bottom face is the electric wall set to 0 [V]. One end of the bar is mechanically fixed.

Body Attributes and Materials

Body Number/Type	Body Attribute Name	Material Name
0/Solid	piezo	000_P-4 *
1/Solid	metal	001_Al *

* Available from the material DB

Boundary Conditions

Boundary Condition Name/Topology	Tab	Boundary Condition Type	Settings
fix/Face	Mechanical	Displacement	Select all UX, UY, and UZ. UX=0, UY=0, UZ=0
earth/Face	Electric	Electric Wall	Electric Potential Specified: Electric Potential 0 [V]
hot/Face	Electric	Electric Wall	Floating Electrode

Results

To view the calculation results, go to the [Results] tab

 

 

 and click [Show Numerical Summary Table] .

 

 
 

The displacement of the bar is shown below. The color contour indicates the magnitude of displacement.