Resonance frequency of piezoelectrics

[usker]

Drej,
I got the following frequencies for Modal Analysis of piezoelectric actuator:

Set Frequency(Hz) DMX
1. 10959 0.75184
2. 16645 1.304
3. 19646 0.644637
4. 24279 1.438
5. 27658 1.88
I used frequency range 10000Hz-30000Hz. So, which frequency is resonance frequency? And how to determine anti-resonance frequency?

Thanks a lot

 

[chris1122]

the frequency corresponding to your required or expected - m,n(nodal lines and diameters) is the resonant frequency. Look at the mode shapes at these frequencies.

see the below link for anti-resonant frequency

http://computing.ee.ethz.ch/sepp/ansys-6.0-bo/Hlp_V_VM175.html

Chris.