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Unformatted text preview: nt across the piezoceramic for the 1/2
The TEMP and MAG degrees of freedom of SOLID5 are not used in this analysis.
Admittance Y is calculated as I/V where I is the current and V is the applied potential. The current I is related to
1 the accumulated charge on the electrode surface as I = jωσQi, where ω is the operating frequency, j is
is the summed nodal charge (nodal reaction load). Since the nodal potentials are coupled, only the reaction
"load" from the single node where the voltage is applied is required for the calculation. A series of calculations
are made between 20 kHz and 54 kHz in POST26, which span the first natural frequency ( ≈ 44 kHz). Results Comparison
Target Ratio Y, mmhos @ 20kHz .41 .43 1.047 Y, mmhos @ 35kHz .90 .96 1.063 Y, mmhos @ 42kHz 2.0 2.8 1.400 Y, mmhos @ 45kHz - -1.74 - Y, mmhos @ 50kHz 1–396 ANSYS .39 .32 0.833 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM176
Y, mmhos @...
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This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.
- Spring '09
- The Land