Hi,

Does anyone know of a modelica piezoelectric library, or library containing piezoelectric elements?

Thanks

Scott

Hi,

I do not know of any libraries containing piezoelectric elements but I am now thinking how to create a very basic piezoelectric element.
I'll could share my experience at the end of this week if this interest you!

Regars,
Félix

Hi,

I attach two files. First named "montage_piezo" containing an assembly with a piezoelectrique beam. Second named "piezo" containing a library with the différent elements require for the assembly.

I hope this model will help you create your own.

Regards,

Félix

Thanks Felix. I will examine your models.

A while back, to solve my original problem, I created a model of a piezo bimorph in Dymola using equations given by Germano**.

I've attached two files below, piezo.mo being the bimorph model, and piezo_test.mo to show the bimorph model in action.

I've compared the model with reality and it works reasonably well (I must get around to writing it up one day!).

In my explorations of the bimorph model, I found that it drives into a non-linear load (ie. diode rectifying bridge) without a problem, however the DC rectified voltages are larger than those measured in the lab. This in turn suggests that removing electrical power from the bimorph does not feed the correct level of damping force back into the mechanical parts of the model.


**IEEE Transactions on Audio and Electroacoustics Vol.AU-19,No. 1 March 1971