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impedance of a piezoelectric

Posted 1 sept. 2011, 10:15 UTC−4 MEMS & Nanotechnology, MEMS & Piezoelectric Devices, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics Version 4.1 6 Replies

Arlindo Garcia
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How do I calculate the impedance of a piezoelectric element?
I am using 2D-axisymmetric (space dimension): piezoeletric diveces (pzt) modes with study: frequency domain.

6 Replies Last Post 17 nov. 2016, 22:55 UTC−5
Edgar Kaiser
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Posted: 1 decade ago 2 sept. 2011, 03:43 UTC−4
If you are talking about electrical impedance it is as simple as: Impedance = Voltage / Current. In gerneral everthing is complex.

Cheers
Edgar
If you are talking about electrical impedance it is as simple as: Impedance = Voltage / Current. In gerneral everthing is complex. Cheers Edgar
Arlindo Garcia
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Posted: 1 decade ago 2 sept. 2011, 09:04 UTC−4

Hello Edgar,

How do I calculate the current (I)?

i am using I=intop1(2*pi*r*pzd.Jz)...take a look (file .docx), but i have not results for current (I)


thanks for your reply
Hello Edgar, How do I calculate the current (I)? i am using I=intop1(2*pi*r*pzd.Jz)...take a look (file .docx), but i have not results for current (I) thanks for your reply

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Edgar Kaiser
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Posted: 1 decade ago 2 sept. 2011, 09:43 UTC−4
Arlindo,

it seems you are integrating across boundary 3, which is on the symmetry axis. I think you must integrate across the interface between the brass electrode and the piezo disc.

Cheers
Edgar
Arlindo, it seems you are integrating across boundary 3, which is on the symmetry axis. I think you must integrate across the interface between the brass electrode and the piezo disc. Cheers Edgar
Arlindo Garcia
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Posted: 1 decade ago 2 sept. 2011, 10:14 UTC−4
Edgar,

Take a look !

Tkanks,
Arlindo
Edgar, Take a look ! Tkanks, Arlindo
Chundong Xu
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Posted: 1 decade ago 22 nov. 2014, 00:18 UTC−5
Hi Adlindo

Have you solved your question? I confront the same one as you, and I also found that many persons have those question of peizoelectric impedance. should someone can give us a simple modle to solve this problem.


Hi Adlindo Have you solved your question? I confront the same one as you, and I also found that many persons have those question of peizoelectric impedance. should someone can give us a simple modle to solve this problem.
Nurul Shafiqa
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Posted: 8 years ago 17 nov. 2016, 22:55 UTC−5
Now im doing my final year project. and its about formulation theory impedance in increasing power output of piezoelectric. The problem is till now i cant find any formula for impedance piezoelectric. can you help me to give any info or anything that related with impedance piezoelectric. i am really need it.
Now im doing my final year project. and its about formulation theory impedance in increasing power output of piezoelectric. The problem is till now i cant find any formula for impedance piezoelectric. can you help me to give any info or anything that related with impedance piezoelectric. i am really need it.

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