II. How To Use ATILA

1.2 Circular Disk (7)
MESHING VIEW RESULTS


PROBLEM - 2D Circular Plate, kp Mode, PZT4 = 50mm f x 1mm t


MESHING

Mapped Mesh

Meshing -> Structured -> Surfaces -> Select the surface-> Then Cancel the further process
Meshing -> Structured -> Lines -> Enter number to divide line -> Choose "1" for all lines (which makes the thickness line no division) -> Choose 8 for only the right and left lines

Mapped mesh (good)

PROBLEM TYPE
Data -> Problem data -> 2D, Axisymmetric, Harmonic, Click both Compute Stress and Include Losses

FREQUENCY
Data -> Interval data (40000-55000 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 : 46000 Hz -> This peak corresponds to the First Resonance
Impedance Peak Point : 53000 Hz -> This peak corresponds to the First Anti-Resonance

Admittance Curve
Impedance curve

To find the exact frequency for the maximum Impedance, use "Show Values".

View Animation - Vibration Mode at a Particular Frequency

View results -> Default Analysis/Step -> Harmonic-Magnitude -> Set a Frequency
(Peak Point : 46000 Hz for Resonance Mode)
Double Click Loading frequency: 46000 Hz Harmonic Case -> Click OK (Single Click and Wait for a while!)

Set Deformation -> Displacement

View results -> Deformation -> Displacement

Diformation Scale Change

Click Windows -> Deform mesh -> Change the Factor in Mesh Deformation

Other parameter than Displacement

Set Results View -> View results -> Contour Fill -> Stress -> YY stress
After setting both “Results view” and “Deformation” -> Click to see the Animation

Notice that the resonance frequency, resonating deformation and the stresses are the same as the ones obtained in the 3D calculation within the calculation resolution!

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