PROBLEM
- Langevin Transducer 50 mm f x
40 mm t (Two PZT 8 disks with 50 mm f x
1 mm t are sandwiched by two Steel 1 blocks with 50 mm f x
19 mm thickness ) with an Rubber Acoustic Lens; 2D Axisymmetric
with 1/2 portion
Learn how to use an acoustic lens
Check the Beam Patter / Directivitiy
PROBLEM
TYPE Data
-> Problem data -> 2D, Axisymmetric, Harmonic,
Click both Compute Stress and Include Losses
FREQUENCY Data
-> Harmonic -> Interval 1 (20000-100000
Hz), Interval 2 (45000-55000 Hz), Interval 3
(80000-90000 Hz)
CALCULATION
Calculate -> Calculate window -> Start
POST
PROCESS/VIEW RESULTS Click
for Opening the Post Calculation (Flavia) Domain
Click Admittance/Impedance
Result
Admittance Peak Point : 50 kHz -> These
peak corresponds to the First split Resonances
Admittance Curve
with a lens (50000 Hz): Damped compared
to the pure Langevin Transducer.
Admittance Curve
without a lens (51000 Hz)
View Animation - Vibration
Mode at a Particular Frequency
View results -> Default Analysis/Step
-> Harmonic-Magnitude -> Set a Frequency
(Peak Point : 50000 Hz for the Resonance Mode) Double Click Loading
frequency: 50000 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 -> Von Mises Stress
After setting both “Results view” and “Deformation” -> Click to
see the Animation