This article presents results of investigation of piezoelectric transducer which consists
of rectangle homogeneous piezoceramic plate with two additional masses glued on the top surface
of the transducer. Because of additional masses and a certain sectioning of piezoelectric
electrodes, the vibration forms of the plate and resonant frequencies are changed, therefore, the
plate generates 3D longitudinal and bending vibrations. Numerical and experimental investigation
showed that the masses glued at the surface of piezoelectric plate obtain elliptical trajectories of
motion when the first mode of longitudinal vibrations of the plate is excited. Such form of
vibrations of the masses enables using them for various piezoelectric drive mechanisms as contact
elements and to transform high-frequency vibrations into the directional or rotational movement
of the rotor or slider. In order to examine the deformations and dynamic characteristics of the
homogenous piezoelectric plate with two additional masses, the numerical modelling of such
piezo transducer and the experimental study have been carried out