Vibration Suppression of Plates by Optimally Calibrated Piezoelectric Rl Shunt Damping

Johan Toftekær, Jan Høgsberg, Ayech Benjeddou, Steen Krenk

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    Abstract

    A calibration procedure for suppression of plate vibrations by means of piezoelectric RL shunt damping is developed, in which the spill-over from non-resonant vibration modes is included by a quasi-dynamic modal correction, taking both flexibility and inertia effects from the residual modes into account. The procedure includes the 2D behaviour of a shunted piezoelectric patch, represented in a finite element model with Kirchhoff plate kinematics. The calibration based on the plate model is compared to previous results for beams, illustrating the 2D effect of the patch and the influence from transverse contraction by the Poisson’s ratio. Finally, the ability to reproduce the desired level of attainable damping for a plate structure is demonstrated.
    Original languageEnglish
    Title of host publicationProceedings of the 8th ECCOMAS Thematic Conference on Smart Structures and Materials
    EditorsA. Güemes, A. Benjeddou, J. Rodellar, J. Leng
    Number of pages12
    PublisherEuropean Community on Computational Methods in Applied Sciences
    Publication date2017
    Publication statusPublished - 2017
    Event8th ECCOMAS Thematic Conference on Smart Structures and Materials - Madrid, Spain
    Duration: 5 Jun 20178 Jun 2017

    Conference

    Conference8th ECCOMAS Thematic Conference on Smart Structures and Materials
    Country/TerritorySpain
    CityMadrid
    Period05/06/201708/06/2017

    Keywords

    • RL Shunts
    • Piezoelectric damping
    • Structural dynamics
    • Resonant calibration

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