Parametric Numerical Investigation of Switching Shunts Techniques for Vibration Reduction

  • Daraki, Maria-Styliani (Technical University of Crete)
  • Foutsitzi, Georgia (University of Ioannina)
  • Deü, Jean-Francois (Conservatoire National des Arts et Métiers)
  • Stavroulakis, Georgios (Technical University of Crete)

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Piezoelectric materials, shunted with suitably designed circuits, provide a passive damping control technique. Nevertheless, exact tuning of the Multiphysics system, narrowband property and irrationally high demands on electric components, reduce the applicability of this technique. A semi-active strategy, based on switch damping techniques, seems more suitable for practical applications like multimode, broadband vibration suppression. A finite element model for an experimental specimen comprised of a metallic cantilever beam with piezoelectric patches has been adopted. Popular variants, like Synchronized Switch Damping (SSD) or less common techniques based on more complicated control strategies will be implemented and their behavior on damping will be compared. The time domain system has been numerically integrated. Taking careful and deeper research of literature useful tools are highlighted for adopting the strategies and making the control rules. Results of parametric numerical investigation and comparison of literature results will demonstrate the effectiveness of the proposed approach. This work builds upon previous efforts [1] as well as fundamental studies [2], [3]. Finally, useful conclusions in view of future experimental verification as well as the required hardware and software will be drawn. Work of Greek team supported by H.F.R.I. Project SCPVSE, ID: 26236. REFERENCES [1] M.-S. Daraki, A. Smarianaki, K. Marakakis, G. A. Foutsitzi, and G. E. Stavroulakis, “Switching Shunts Using Fuzzy Logic for Vibration Mitigation of Smart Flexible Structures,” 11th ECCOMAS Thematic Conference on Smart Structures and Materials, Linz, Austria. [2] J. Ducarne, O. Thomas, and J.-F. Deü, “Structural Vibration Reduction by Switch Shunting of Piezoelectric Elements: Modeling and Optimization,” Journal of Intelligent Material Systems and Structures, vol. 21, no. 8, pp. 797–816, May 2010, doi: 10.1177/1045389X10367835. [3] W. Larbi, J.-F. Deü, M. Ciminello, and R. Ohayon, “Structural-Acoustic Vibration Reduction Using Switched Shunt Piezoelectric Patches: A Finite Element Analysis,” Journal of Vibration and Acoustics, vol. 132, no. 5, Oct. 2010, doi: 10.1115/1.4001508.