2
Legs: 8 mm L
x 2 mm W x 1 mm t Corner:
2 mm x 2 mm x 1 mm t (PZT4) Clamped
at two leg ends
Learn the ultrasonic motor principle - Generate
an elliptical locus
Learn how to apply sine & cosine voltages
simultaneously
PROBLEM
TYPE
Data
-> Problem data -> 3D, Harmonic, Click both Compute
Stress and Include Losses
FREQUENCY
Data
-> Harmonic -> Interval 2 (35000-100000 Hz)
CALCULATION
Calculate -> Calculate window -> Start
POST
PROCESS/VIEW RESULTS
Click
for Opening the Post Calculation (Flavia) Domain
Click Admittance/Impedance
Result
Admittance Peak Points : 61000 Hz and 825 Hz -> This
peak corresponds to the First and Second Resonance Modes
Admittance Curve
View Animation - Vibration Mode
at a Particular Frequency
View results -> Default Analysis/Step
-> Harmonic-Magnitude -> Set a Frequency
(Peak Point : 41000 Hz for Resonance Mode) Double Click Loading
frequency: 61000 Hz Harmonic Case -> Click OK (Single
Click and Wait for a while!)
Set Deformation
-> Displacement
View results -> Deformation -> Displacement
Other parameter than Displacement
Set Results View -> View results -> Contour
Fill -> Electric Potential or Von Mises Stress
After setting both “Results view” and “Deformation” -> Click to
see the Animation
61000 Hz - Resonance
82500 Hz - Resonance
When we drive this actuator
at the intermediate frequency of these two resonances
(70 kHz), we obtain the superposed elliptical locus
at the tip. This is used as a linear ultrasonic
motors