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II.
How To Use ATILA
1.1
Rectangular Plate (Homework 1)
Second-Order
Harmonic Vibration Mode
PROBLEM
- 3D Rectangular Plat, k31 Mode, PZT4 = 40mm x 6mm x 1mm

1. |
Loading the frequency range around 120 kHz, calculate the
admittance spectrum for the 2nd Higher Order Harmonic vibration. |
2. |
Loading the maximum frequency, obtain the 2nd Order Harmonic vibration
mode. |
3. |
Compare the maximum strain and stress levels (under 1 V applied) among
the 1st and 2nd modes. |
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You are requested to use a different mesh, and more calculation frequency
points (21 points minimum).
The admittance spectrum, vibration mode animation and the maximum strain/stress
table (comaparing the 1st and 2nd modes) should be submitted in a Power Point
Presentation file. |
HINT:
View Results – Higher
Order Harmonic 
Loading frequency: 122000 Hz -> Harmonic Case -> OK
Set Deformation -> Displacement
Set Results -> View -> View results -> Contour Fill -> Stress - > XX-stress
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