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Unformatted text preview: electric transducer consists of a simply supported circular plate of radius a and thickness t (figure a below)
made of PZT-5A ceramic polarized along the Z axis. The circular surfaces of the plate are fully covered by electrode
and connected in series with a resistor (R), inductor (L), and a source of constant voltage (V) (figure b below).
Determine the voltage across the piezoelectric transducer over the time interval of 2 ms. Figure 237.1 Problem Sketch
a X L +
_ Y t
(a) Material Properties
ρ = 7750 kg/m3
See “Constitutive Matrices”
R = 3kΩ
L = 15 H (b)
a = 1 mm
t = 0.1 mm Loading
Stepped voltage V = 1 V Constitutive Matrices (polar axis aligned along the Y axis)
PZT-5A Dielectric Permittivity Matrix at Constant Stress [εTr] ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–555 VM237
0 1730 1700
1730 PZT-5A Piezoelectric Strain Matrix [d], 1010 C/N
−1.71 0 0 3.74
−1.71 0 0
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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