General numerical implementation of a new piezoelectric shunt tuning method based on the effective electromechanical coupling coefficient

Johan Frederik Toftekær*, Ayech Benjeddou, Jan Høgsberg

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    A recently proposed tuning method for resistive-inductive (RL) shunts is implemented in a commercial finite element (FE) code (ANSYS®). A main result of the paper is therefore the consistent formulation of the tuning method in terms of variables directly available as solutions in any commercial FE code: The two natural frequencies associated with short- and open-circuit (SC and OC) electrodes and a modal charge obtained as the electrical SC reaction force. An alternative method is based on quasi-static solutions with SC and OC electrodes, convenient for both numerical analysis and experiments. The proposed shunt tuning method is suitable for implementation in any commercial FE software supporting electromechanical analysis and ANSYS® has been used to assess its accuracy for a piezoelectric smart plate benchmark problem. The method is finally extended to multiple piezoceramic patches, placed symmetrically on the structure and shunted to a single RL network, whereby more vibration modes can be effectively controlled for the specific plate problem.
    Original languageEnglish
    JournalMechanics of Advanced Materials and Structures
    Volume27
    Issue number22
    Pages (from-to)1908-1922
    ISSN1537-6494
    DOIs
    Publication statusPublished - 2020

    Keywords

    • Shunt piezoelectric damping
    • Resonant shunt calibration
    • Residual mode correction
    • Effective electromechanical coupling coefficient
    • ANSYS® finite element code
    • Plates

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