VNU-UET Repository: No conditions. Results ordered -Date Deposited. 2024-03-28T22:07:44ZEPrintshttp://eprints.uet.vnu.edu.vn/images/sitelogo.pnghttps://eprints.uet.vnu.edu.vn/eprints/2018-12-14T01:33:30Z2018-12-18T08:22:32Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/3239This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/32392018-12-14T01:33:30ZFinite Element Modeling and Experimental Studies of Stack-Type Piezoelectric Energy HarvesterIn this paper, closed-form coupled electromechanical one-dimensional (1-D) model and finite
element (FE) model for stack-type piezoelectric energy harvester (PEH) and delivery to a resistive
load available in the literature were proposed. We obtained the values of some parameters of 1-D
model and set the boundaries of its applicability based on the comparison of the resonance frequency
and output voltage between the FE model and 1-D model. The numerical modeling results of the
full-scale experiment with low-frequency pulse excitation of the stack-type PEH for the energy
storage device are described. PEH is a multilayer axisymmetric piezoceramic package. The
dependence between the output voltage and the current load rate under the harmonic and nonstationary
mechanical action of the PEH is studied. The experimental results-to-numerical
calculation correlation has shown their good coincidence, which allows using the analyzed
numerical models to optimize the PEH design at the given external action frequency and the active
resistance value of the external electric circuit. Besides, it found that the frequency dependence of
the output voltage of the stack-type PEH is of a complex nature depending both on the compressive
pulse loading level and the piezoelectric modulus value of the PEH sensitive element, and on the
electrical load resistance.
Keywords: Finite element (FE), piezoelectric energy harvester (PEH), 1-D model, approximate
effective mass, stack-type, resonant frequency.V. Duong LeManh Thang Phamthangpm@vnu.edu.vnV.A. ChebanenkoA.N. SolovyevVan Chuong Nguyen