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Micromechanical modelling of switching phenomena in polycrystalline piezoceramics: application of a polygonal finite element approach

Kaliappan, Jayabal; Menzel, Andreas LU ; A., Arockiarajan and S.M., Srinivasan (2011) In Computational Mechanics 48(4). p.421-435
Abstract
A micromechanically motivated model is proposed to capture nonlinear effects and switching phenomena present in ferroelectric polycrystalline materials. The changing remnant state of the ferroelectric crystal is accounted for by means of so-called back fields-such as back stresses-to resist or assist further switching processes in the crystal depending on the local loading history. To model intergranular effects present in ferroelectric polycrystals, the computational model elaborated is embedded into a mixed polygonal finite element approach, whereby an individual ferroelectric grain is represented by one single irregular polygonal finite element. This computationally efficient coupled simulation framework is shown to reproduce the... (More)
A micromechanically motivated model is proposed to capture nonlinear effects and switching phenomena present in ferroelectric polycrystalline materials. The changing remnant state of the ferroelectric crystal is accounted for by means of so-called back fields-such as back stresses-to resist or assist further switching processes in the crystal depending on the local loading history. To model intergranular effects present in ferroelectric polycrystals, the computational model elaborated is embedded into a mixed polygonal finite element approach, whereby an individual ferroelectric grain is represented by one single irregular polygonal finite element. This computationally efficient coupled simulation framework is shown to reproduce the specific characteristics of the responses of ferroelectric polycrystals under complex electromechanical loading conditions in good agreement with experimental observations. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ferroelectrics, Switching, Micromechanical modelling, Back fields, Polygonal finite elements
in
Computational Mechanics
volume
48
issue
4
pages
421 - 435
publisher
Springer
external identifiers
  • wos:000295849700003
  • scopus:80052963560
ISSN
0178-7675
DOI
10.1007/s00466-011-0595-4
language
English
LU publication?
yes
id
7f28f485-145d-473c-9c78-ec5195f27893 (old id 2212875)
date added to LUP
2011-11-23 11:26:11
date last changed
2017-06-18 03:12:49
@article{7f28f485-145d-473c-9c78-ec5195f27893,
  abstract     = {A micromechanically motivated model is proposed to capture nonlinear effects and switching phenomena present in ferroelectric polycrystalline materials. The changing remnant state of the ferroelectric crystal is accounted for by means of so-called back fields-such as back stresses-to resist or assist further switching processes in the crystal depending on the local loading history. To model intergranular effects present in ferroelectric polycrystals, the computational model elaborated is embedded into a mixed polygonal finite element approach, whereby an individual ferroelectric grain is represented by one single irregular polygonal finite element. This computationally efficient coupled simulation framework is shown to reproduce the specific characteristics of the responses of ferroelectric polycrystals under complex electromechanical loading conditions in good agreement with experimental observations.},
  author       = {Kaliappan, Jayabal and Menzel, Andreas and A., Arockiarajan and S.M., Srinivasan},
  issn         = {0178-7675},
  keyword      = {Ferroelectrics,Switching,Micromechanical modelling,Back fields,Polygonal finite elements},
  language     = {eng},
  number       = {4},
  pages        = {421--435},
  publisher    = {Springer},
  series       = {Computational Mechanics},
  title        = {Micromechanical modelling of switching phenomena in polycrystalline piezoceramics: application of a polygonal finite element approach},
  url          = {http://dx.doi.org/10.1007/s00466-011-0595-4},
  volume       = {48},
  year         = {2011},
}