Numerical and experimental analysis of the effectiveness of material composition of piezoelectric elements with chosen shapes on plate vibration reduction

This paper presents numerical analyses of efficiency of different shapes and with a step change of material properties of piezoelectric actuators used for vibration and structural noise reduction. Analytical models representing a plate clamped on all sides with two attached piezoelectric elements were created. For each model, one element had the same shape and composition and was used for plate excitation, and the other one, used for vibration reduction, had different shape (circular, square, triangular) and location of the inner part of a two-part piezoactuator. Analyses of results were performed with ANSYS software. Finally, results of numerical simulations concerning effectiveness in vibration reduction of piezoactuators constructed this way are presented and are compared with experimental results.