Menu

Discussion Forum

New Discussion
Filtra

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Piezoelectric transformer - eigenfrequency analysis

Posted 21 mar 2012, 16:37 GMT-4 Version 4.2 0 Replies

Sneha Lele
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello all,

I am simulating a rectangular piezoelectric transformer using Multiphysics and MEMS module.
When I run the eigenfrequency analysis and the frequency domain analysis, the results seem to match but the eigenfrequencies I obtain are very close to each other. I have defined a material in its stress charge form. The geometry and material properties correspond to resonant frequencies that are multiples of the 1st harmonic frequency (close to 50kHz). The frequencies I am getting are all very close to the 1st eigenfreq (approx. 50kHz).
Aren't eigenfrequencies supposed to be harmonics? I am attaching my model for reference.

Is there any parameter I have missed? Can anyone help?

Thanks.
Sneha

Attachments:

0 Replies Last Post 21 mar 2012, 16:37 GMT-4
COMSOL Moderator

Hello Sneha Lele

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content