A Two-Step Hybrid Approach for Modeling the Nonlinear Dynamic Response of Piezoelectric Energy Harvesters

An effective hybrid computational framework is described here in order to assess the nonlinear dynamic response of piezoelectric energy harvesting devices. The proposed strategy basically consists of two steps. First, fully coupled multiphysics finite element (FE) analyses are performed to evaluate...

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Bibliographic Details
Published in:Shock and vibration 2018-01, Vol.2018 (2018), p.1-21
Main Authors: Trentadue, Francesco, Montegiglio, Pasquale, Quaranta, Giuseppe, Maruccio, Claudio, Acciani, Giuseppe
Format: Article
Language:English
Subjects:
Civil engineering
Computation
Computer simulation
Dynamic response
Electric fields
Energy
Energy harvesting
Finite element method
Forced vibration
Harvesters
Homogenization
Mathematical models
Nonlinear response
Numerical analysis
Piezoelectricity
Reduced order models
Sensors
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Summary:An effective hybrid computational framework is described here in order to assess the nonlinear dynamic response of piezoelectric energy harvesting devices. The proposed strategy basically consists of two steps. First, fully coupled multiphysics finite element (FE) analyses are performed to evaluate the nonlinear static response of the device. An enhanced reduced-order model is then derived, where the global dynamic response is formulated in the state-space using lumped coefficients enriched with the information derived from the FE simulations. The electromechanical response of piezoelectric beams under forced vibrations is studied by means of the proposed approach, which is also validated by comparing numerical predictions with some experimental results. Such numerical and experimental investigations have been carried out with the main aim of studying the influence of material and geometrical parameters on the global nonlinear response. The advantage of the presented approach is that the overall computational and experimental efforts are significantly reduced while preserving a satisfactory accuracy in the assessment of the global behavior.
ISSN:1070-9622
1875-9203
DOI:10.1155/2018/2054873