Detail publikace

Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses

MACHŮ, Z. ŠEVEČEK, O. HADAŠ, Z. KOTOUL, M.

Originální název

Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The article focuses on a modeling and subsequent optimization of a novel layered architecture of the vibration piezoceramic energy harvester composed of ZrO2/Al2O3/BaTiO(3)layers and containing thermal residual stresses. The developed analytical/numerical model allows to determine the complete electromechanical response and the apparent fracture toughness of the multilayer vibration energy harvester, upon consideration of thermal residual stresses and time-harmonic kinematic excitation. The derived model uses the Euler-Bernoulli beam theory, Hamilton's variational principle, and a classical laminate theory to determine the first natural frequency, steady-state electromechanical response of the beam upon harmonic vibrations, and also the mechanical stresses within particular layers of the harvester. The laminate apparent fracture toughness is computed by means of the weight function approach. A crucial point is the further optimization of the layered architecture from both the electromechanical response and the fracture resistance point of view. Maximal allowable excitation acceleration of the harvester upon which the piezoelectric layer will not fail is determined. It makes possible to better use the harvester's capabilities in a given application and simultaneously guarantee its safe operation. Outputs of the derived analytical model were validated with finite element method simulations and available experimental results, and a good agreement between all approaches was obtained.

Klíčová slova

ceramic laminate; piezoelectricity; finite element model; classical laminate theory; vibrations; energy harvesting; optimization; fracture resistance

Autoři

MACHŮ, Z.; ŠEVEČEK, O.; HADAŠ, Z.; KOTOUL, M.

Vydáno

1. 11. 2020

Nakladatel

SAGE Publications Ltd

Místo

Velká Británie

ISSN

1530-8138

Periodikum

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES

Ročník

31

Číslo

19

Stát

Spojené království Velké Británie a Severního Irska

Strany od

2261

Strany do

2287

Strany počet

27

URL

https://journals.sagepub.com/doi/full/10.1177/1045389X20942832

BibTex

@article{BUT164670,
  author="Zdeněk {Machů} and Oldřich {Ševeček} and Zdeněk {Hadaš} and Michal {Kotoul}",
  title="Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses",
  journal="JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES",
  year="2020",
  volume="31",
  number="19",
  pages="2261--2287",
  doi="10.1177/1045389X20942832",
  issn="1530-8138",
  url="https://journals.sagepub.com/doi/full/10.1177/1045389X20942832"
}