6.2
Underwater Cymbal (3) PROBLEM
TYPEVIEW
RESULTS
PROBLEM
- Cymbal 12 mm f x 2.4 mm
t (Metal thickness 0.2 mm, PZT thickness 0.5 mm x two
layer, Cavity hight 0.5 mm); 2D Axisymmetric with a full
portion
An underwater transducer
Learn the underwater sound propagation
- Monopole & Dipole
PROBLEM
TYPE
Data
-> Problem data -> 2D, Axisymmetric, Harmonic,
Click both Compute Stress and Include Losses
Click
for Opening the Post Calculation (Flavia) Domain
Click Admittance/Impedance
Result
To find the exact resonance
frequency, Click "Show Values".
Admittance Peak Point : 24000 Hz -> This
peak corresponds to the First Resonance
Admittance Curve
for Underwater Cymbal
Compared to the no-load Cymbal
Impedance curve (see the right figure),
water load dropps both the resonace frequency
and Qm
Admittance Curve
for Air Cymbal
View Animation - Vibration
Mode at a Particular Frequency
View results -> Default Analysis/Step
-> Harmonic-Magnitude -> Set a Frequency
(Peak Point : 24000 Hz for Resonance Mode) Double Click Loading
frequency: 24000 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 Lines -> Fluid
Pressure
After setting both “Results view” and “Deformation” -> Click to
see the Animation
24000 Hz - Resonance
Transmitting Voltage Ratio
(TVR) [as a function of frequency]