Work

Accounting for dielectric losses in piezoelectric shunt tuning

Year: 2025

Type: article

Abstract: Effective vibration reduction of mechanical structures by piezoelectric shunt damping requires a precise design of the electrical shunt circuit. In this context, the influence of dielectric losses on the accuracy of shunt calibration is analyzed. Numerical analysis of an SDOF structure shows that dielectric losses can result in a significantly increased vibration amplitude when not accounted for in the calibration of a resonant shunt. To address this, a new correction method based on impedance matching is proposed, enabling the use of existing tuning expressions not accounting for dielectric losses. It is demonstrated numerically and experimentally that the influence of dielectric losses is more pronounced for low electromechanical coupling factors. The proposed correction method is shown to provide an accurate correction for the influence of dielectric losses on the shunt tuning.

Source: Journal of Sound and Vibration

DOI: 10.1016/j.jsv.2025.119598

Authors: Jens D. Richardt, Boris Lossouarn, Jan Høgsberg, Jean-François Deü

Institutions: Technical University of Denmark, Conservatoire National des Arts et Métiers, Laboratoire de mécanique des structures et des systèmes couplés

Language: English

Topic: Aeroelasticity and Vibration Control

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,190

Funders: Augustinus Fonden, Reinholdt W. Jorck og Hustrus Fond, Knud Højgaards Fond