Optimization of direct and parametric piezoelectric energy harvester with geometrical nonlinearities - Archive ouverte HAL
Communication Dans Un Congrès Année : 2024

Optimization of direct and parametric piezoelectric energy harvester with geometrical nonlinearities

Résumé

Comparison of behaviors and performances between large amplitude nonlinear direct and parametric shunted piezoelectric energy harvesters (PEH) are addressed in this paper. A model of geometrically exact piezoelectric laminated beam with parametric excitation is proposed and simplified with Euler-Bernoulli and inextensible assumptions, Taylor series expansion of transverse displacement and truncation, and first-mode Galerkin expansion. A cantilever beam with two collocated patches is then considered and patches placement and geometry are computed based on coupling-factor optimization. Analytical and numerical resolution methods are compared. PEH behaviors and performances are compared regarding the dissipated power in the resistor at resonance. Three cases are considered: linear-direct, nonlinear-direct and nonlinear-parametric. Results show a gap between direct and parametric PEH performances and the importance of the threshold excitation parametric effect.
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Dates et versions

hal-04705400 , version 1 (23-09-2024)

Identifiants

  • HAL Id : hal-04705400 , version 1

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Hugo Fayolle, Christophe Giraud-Audine, Olivier Thomas. Optimization of direct and parametric piezoelectric energy harvester with geometrical nonlinearities. ENOC2024, Jul 2024, Delft, Netherlands. ⟨hal-04705400⟩
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