Datum
2021-12-20Schlagwort
500 Naturwissenschaften 620 Ingenieurwissenschaften FerroelektrikumHystereseRemanenzHomogenisierenKorngrößenverteilungPhysikalische EigenschaftMetadata
Zur Langanzeige
Aufsatz
Multiscale modeling of ferroelectrics with stochastic grain size distribution
Zusammenfassung
Macroscopic properties of ferroelectrics are controlled by processes on the microscale, in particular the switching of crystal unit cells and the movement of domain walls, respectively. Besides these microscopic levels, the grains of a polycrystalline material constitute the mesoscopic scale. Interactions of grains with statistically distributed orientations, as a consequence of mechanical and electrostatic mismatch, give rise to for example, residual stress which in turn affects domain switching. A multiscale modeling thus has to incorporate at least three interacting scales. In this context, the condensed method has recently been elaborated as an efficient tool with low computational cost and effort of implementation. It is extended toward statistical distributions of grain sizes in a representative material volume element and amended with regard to the modeling of domain evolution. Each of the few parameters of the constitutive approach has a unique physical meaning and is adapted to available experimental values of macroscopic quantities of barium titanate taken from various sources.
Zitierform
In: Journal of Intelligent Materials Systems and Structures Volume 33 / Issue 14 (2021-12-20) , S. 1773-1786 ; eissn:1045-389XFörderhinweis
Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem VerlagZitieren
@article{doi:10.17170/kobra-202207186483,
author={Lange, Stephan and Ricoeur, Andreas},
title={Multiscale modeling of ferroelectrics with stochastic grain size distribution},
journal={Journal of Intelligent Materials Systems and Structures},
year={2021}
}
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2022-09-12T09:12:03Z 2022-09-12T09:12:03Z 2021-12-20 doi:10.17170/kobra-202207186483 http://hdl.handle.net/123456789/14141 Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlag eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ ferroelectric hysteresis remanent polarization remanent strain condensed method representative volume element homogenization grain size distribution 500 620 Multiscale modeling of ferroelectrics with stochastic grain size distribution Aufsatz Macroscopic properties of ferroelectrics are controlled by processes on the microscale, in particular the switching of crystal unit cells and the movement of domain walls, respectively. Besides these microscopic levels, the grains of a polycrystalline material constitute the mesoscopic scale. Interactions of grains with statistically distributed orientations, as a consequence of mechanical and electrostatic mismatch, give rise to for example, residual stress which in turn affects domain switching. A multiscale modeling thus has to incorporate at least three interacting scales. In this context, the condensed method has recently been elaborated as an efficient tool with low computational cost and effort of implementation. It is extended toward statistical distributions of grain sizes in a representative material volume element and amended with regard to the modeling of domain evolution. Each of the few parameters of the constitutive approach has a unique physical meaning and is adapted to available experimental values of macroscopic quantities of barium titanate taken from various sources. open access Lange, Stephan Ricoeur, Andreas doi:10.1177/1045389X211064341 Ferroelektrikum Hysterese Remanenz Homogenisieren Korngrößenverteilung Physikalische Eigenschaft publishedVersion eissn:1045-389X Issue 14 Journal of Intelligent Materials Systems and Structures 1773-1786 Volume 33 false
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