Mehmet, It depends what kind of PZT device you have. Bascially, program is capable of calculating time and frequency response of the transducer, including of electrical input impedance, front port displacement, velocity and force calculations.
Transducer can consist of piezoelectric material, electrodes and matching layers.
Since, you are from educational institution I can provide the program for you. I may provide the program for industrial users. I am also working on flextensional mode piezoelectric transducers. Currently, I am using variational methods and plate equations to calculate the displacement of a laminated piezoelectric-passive membrane flextensional transducers. Hope this help you.