Vibration damping of turbomachinery components with piezoelectric transducers: Theory and Experiment

The first part of this paper discusses a design rule for the RL-shunts circuits used for vibration damping of a bladed drum. These rules take advantage from the complexity and variability of the modal behavior of the bladed drum to overcome the high level of uncertainties affecting the structure. In the second part, the dynamic behavior of the bladed drum is described briefly. The performances granted by the proposed RL shunt design are supported by experiments carried out on the prototype of a bladed drum. The proposed solution proves very simple, efficient and robust with respect to all parameter change in the system.