Vibration attenuation using a piezoelectric shunt circuit based on finite element method analysis

A numerical model of a beam structure with a piezoelectric actuator bonded to the surface of the structure and an accelerometer placed on the tip can be obtained in the ANSYS Matlab platform. The validated numerical model and the experimental data allow us to use the obtained finite element model of the complete system (beam, piezoactuator and accelerometer) as a basis for the design and optimization of the electrical shunted circuit elements. The obtained optimal electrical elements of the circuit network have been used in an experimental test to confirm the numerical result. The analysis has been extended to more complex structures, such as the dominant mode of vibration of a chassis subframe of a car.