Hybrid active-passive damping treatments using viscoelastic and piezoelectric materials: Review and assessment

Hybrid active-passive damping treatments combine the reliability, low cost and robustness of viscoelastic damping treatments and the high performance, modal selective and adaptive piezoelectric active control. Numerous hybrid damping treatments have been reported in the literature. They differ mainly by the relative positions of viscoelastic treatments, sensors and piezoelectric actuators. Therefore, the present article provides a review of the open literature concerning geometric configurations, modeling approaches and control algorithms for hybrid active (piezoelectric)-passive (viscoelastic) damping treatments of beams. In addition, using a unified finite element model able to represent sandwich damped beams with piezoelectric laminated faces and an optimal control algorithm, the geometric optimization of four hybrid treatments is studied through treatment length and viscoelastic material thickness parametric analyses. A comparison of the performances of these hybrid damping treatments is carried out and the advantages and drawbacks of each treatment are identified. Beside the literature review of more than 80 papers, the present assessment has the merit to present for the first time detailed parametric and comparative analyses for these already known hybrid active (piezoelectric)-passive (viscoelastic) damping configurations. This may be of valuable help for researchers and designers interested in this still growing field of hybrid active-passive damping systems.