Piezoelectric harmonic analysis

[usker]

I have an assembly of piezoelectric discs stack with the hole in the middle, sitting on a stainless steel bar and fastened from both sides. I have done harmonic analysis applying potential difference at the each interface of the piezoelectric disk and at the interface of piezoelectric disk and stainless steel. I did not apply any force. In the Time History Variables Viewer when I select "Add" -> Nodal Solution -> Y-Component of displacement, in order to get a graph Amplitude over Frequency, it does not show any value (Minimum, Maximum)for the amplitude. I guess I need to add a spring into my model so that I can immitate the vibration of the model assembly. So, now I have meshed model assembly of piezoelectric discs and stainless steel bar, how I can introduce spring element into my model? As I know COMBIN 14 element does not have mass. Do I have to create additional area and mesh it to immitate the spring and specify material properties like density, EX etc., or there is some other way to introduce spring element into my model.

Appreciate you help

 

[Drej]

Go to forum569 and post in here.


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