Brass
Bar L = 46 mm, t = 2.5 mm Leg
L = 10 mm, t = 2 mm PZT
4 L = 11.5 mm, t = 1 mm
Learn the difference between the 2D and
3D models.
2D model
3D model
PROBLEM
TYPE
Data
-> Problem data -> 2D or 3D, Harmonic, Click
both Compute Stress and Include Losses
Choose Class = PLSTRAIN in the
2D case.
CALCULATION
Calculate -> Calculate window -> Start
POST
PROCESS/VIEW RESULTS
Click
for Opening the Post Calculation (Flavia) Domain
Click Admittance/Impedance
Result
2D Result: Admittance Peak Points : 64000 Hz and 76000 Hz -> These
peaks corresponds to the Fourth Bending and the First Longitudinal
Resonance Modes
Admittance Curve
3D Result: Admittance Peak
Points : 64800 Hz and 72800 Hz -> These
peaks corresponds to the Fourth Bending
and the First Longitudinal Resonance Modes
Admittance
Curve
Notice the
almost the same spectra for the 2D and
3D simulations, except a slight deviation
in the resonance frequencies.
View Animation - Vibration
Mode at a Particular Frequency