Passive Damping of Rotationally Periodic Structures with Tuned Piezoelectric Inductive Shunt

Mokrani, Bilal, Bastaits, Renaud, Romanescu, Iulian, Horodinca, Mihaita, Burda, Ioan and Preumont, Andre (2018) Passive Damping of Rotationally Periodic Structures with Tuned Piezoelectric Inductive Shunt. ACTUATORS, 7 (3). p. 41.

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Abstract

<jats:p>This paper considers the piezoelectric resistive and inductive RL shunt damping applied to rotationally periodic structures equipped with an array of regularly spaced piezoelectric patches. A method for simplifying the hardware, by reducing the size of the inductors and eliminating the use of synthetic inductors, is described. The paper compares two different ways of using the piezoelectric array: independent loops and parallel loops. It shows that, if a specific mode with n nodal diameters is targeted, mounting 4n piezoelectric patches in two parallel loops is as efficient as mounting them in 4n independent loops, while considerably reducing the demand on the inductors, L, (by 4n2). The method takes advantage of the mode shapes of rotationally periodic structures. The proposed method is validated numerically and experimentally on a rotationally periodic circular plate (nearly axisymmetric). The proposed technique is aimed at turbomachinery applications.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	vibration damping, piezoelectric shunts, RL shunt, blisks, axisymmetric structures, periodic structures
Depositing User:	Symplectic Admin
Date Deposited:	09 Aug 2018 08:35
Last Modified:	19 Jan 2023 01:29
DOI:	10.3390/act7030041
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3024759