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piezoelectric property

Posted 4 févr. 2016, 03:57 UTC−5 Low-Frequency Electromagnetics, Materials, Structural Mechanics Version 5.0 2 Replies

Thien
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Hi everyone,

In the piezoelectric modulus, there is two constitutive relation: strain-charge form and stress -charge form. So we have two calculation method. I carried out a test about impedance analysis to compare two method and the resultat of theses method is different? So If you have the same problem please give me some explication.

Thank you!
2 Replies Last Post 21 févr. 2016, 08:03 UTC−5
Henrik Sönnerlind COMSOL Employee

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Posted: 8 years ago 8 févr. 2016, 10:33 UTC−5
Hi,

These are only two different ways of entering the material properties, so the results should be the same assuming that the conversion between the two sets of data is correct.

Regards,
Henrik
Hi, These are only two different ways of entering the material properties, so the results should be the same assuming that the conversion between the two sets of data is correct. Regards, Henrik
Khawar Hussain
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Posted: 8 years ago 21 févr. 2016, 08:03 UTC−5
Hi Henrik Sönnerlind

i am trying to do Eigenfrequency analysis on a piezoelectric cantilever beam. but the results are coming different as compared to analytical expression. Analytical expression donot use stress or strain equations as in piezoelectric and comsol does not use youngs modulus ...which is included in analytical expression.
can u guide me what is the problem


thanks in Advance
khawar
Hi Henrik Sönnerlind i am trying to do Eigenfrequency analysis on a piezoelectric cantilever beam. but the results are coming different as compared to analytical expression. Analytical expression donot use stress or strain equations as in piezoelectric and comsol does not use youngs modulus ...which is included in analytical expression. can u guide me what is the problem thanks in Advance khawar

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