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Numerical modelling of micro energy harvesting systems based on piezoelectric composites polarized with interdigitated electrodes
(IOP Publishing, 2020-07)
This paper focuses on the numerical modelling of micro-energy harvesting systems(MEHSs) based on piezoelectric composites polarised with interdigitated electrodes (PCPIE). The system response and the harvested energy are ...
A novel up-converting mechanism based on double impact for non-linear piezoelectric energy harvesting
(IOP Publishing, 2020-11-01)
In this paper we show the importance of double impact in an up-converting mechanism by usinga resonant low-frequency driving beam across a high-frequency piezoelectric beam, to enhancethe electrical output power in a ...
A coupled formulation of fluid-structure interaction and piezoelectricity for modeling a multi-body energy harvester from vortex-induced vibrations
(Pergamon-Elsevier Science Ltd, 2021-12)
In this work, a coupled formulation for modeling multiple piezoelectric energy harvesters based on vortex-induced vibrations phenomenon at arbitrary locations was presented and experimentally validated. The mathematical ...
A piezoelectric beam model with geometric, material and damping nonlinearities for energy harvesting
(IOP Publishing, 2020-09-10)
To predict electrical generation in piezoelectric small-scale beam energy harvesting devices, it is important to have a complete mathematical model that captures the different associated phenomena. In the literature, some ...
Three-dimensional formulation of a strain-based geometrically nonlinear piezoelectric beam for energy harvesting
(Sage Publications Ltd, 2021-01)
In this paper, the authors introduce a model of a strain-based geometrically nonlinear piezoelectric beam for modeling energy harvesters. A nonlinear shear-underfomable 3-D Rayleigh’s beam theory is used to model the ...
Rotational double-beam piezoelectric energy harvester impacting against a stop
(Elsevier, 2019-12)
In this paper, a low-frequency rotational piezoelectric energy harvester is proposed to operate out of resonance with the incorporation of a flexible stop. A numerical scheme is developed for the analysis of the contact ...
Effect of nonlinearities and objective function in optimization of an energy harvesting device
(Institute of Physics Publishing, 2018-07)
This work presents a study of the impact of the linearity assumption of the mechanical model in the overall performance of an energy harvesting piezoelectric beam. Also, a brief assessment of geometrical optimization ...
A piezoelectric energy harvester for rotating environment using a linked E-shape multi-beam
(Elsevier, 2019-02)
This paper analyzes the effects of rotational motion on the performance of an innovative piezoelectric energy harvester (PEH) operating in a very low rotation speed (0.5 to 3 Hz) environment. The rotational energy harvester ...
Computational study on aerodynamically coupled piezoelectric harvesters
(Sage Publications Ltd, 2020-08)
In this work, the authors present a two-dimensional computational model for predicting the aeroelastic response as well as the output power of vertically arranged harvesters by taking into account all aerodynamic interactions. ...
Piezoelectric and structural properties of bismuth sodium potassium titanate lead-free ceramics for energy harvesting
(Springer, 2021-07)
The development of piezoelectric ceramics with high energy conversion efficiency is of decisive importance for the requirements of the advanced energy harvesting devices toward miniaturization and integration. Lead ...