Xu, Bai-Xiang ; Schrade, David ; Gross, Dietmar ; Müller, Ralf (2010)
Phase field simulation of domain structures in cracked ferroelectrics.
In: International Journal of Fracture, 165 (2)
doi: 10.1007/s10704-010-9471-z
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The fracture of ferroelectrics is a complex process which is influenced by various factors, among which are the domain switching near the crack tip, the crack face boundary conditions and the applied electric field. Domain switching near crack tips induces major local nonlinearity, while the crack face boundary conditions vary considerably due to different working conditions. In this work, a phase field model and a generalization of the configurational force theory into this model are used to investigate the microstructure around the crack tip and to quantitatively study the influence of the applied electric field and the crack face boundary conditions (permeable, impermeable, semi-permeable and energetically consistent). Evaluation of the fracture properties is done by the nodal configurational force at the crack tip based on the generalized configurational force theory. Results show that the induced domain structure relies significantly on the loading and on the surface boundary conditions. Among the four different conditions considered, the energetically consistent conditions lead to the smallest crack driving force, and the permeable conditions lead to the largest crack driving force. Calculations also show that positive electric fields tend to inhibit fracture, whereas negative electric fields tend to promote fracture.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Xu, Bai-Xiang ; Schrade, David ; Gross, Dietmar ; Müller, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Phase field simulation of domain structures in cracked ferroelectrics |
| Sprache: | Englisch |
| Publikationsjahr: | Oktober 2010 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | International Journal of Fracture |
| Jahrgang/Volume einer Zeitschrift: | 165 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1007/s10704-010-9471-z |
| URL / URN: | http://link.springer.com/10.1007/s10704-010-9471-z |
| Kurzbeschreibung (Abstract): | The fracture of ferroelectrics is a complex process which is influenced by various factors, among which are the domain switching near the crack tip, the crack face boundary conditions and the applied electric field. Domain switching near crack tips induces major local nonlinearity, while the crack face boundary conditions vary considerably due to different working conditions. In this work, a phase field model and a generalization of the configurational force theory into this model are used to investigate the microstructure around the crack tip and to quantitatively study the influence of the applied electric field and the crack face boundary conditions (permeable, impermeable, semi-permeable and energetically consistent). Evaluation of the fracture properties is done by the nodal configurational force at the crack tip based on the generalized configurational force theory. Results show that the induced domain structure relies significantly on the loading and on the surface boundary conditions. Among the four different conditions considered, the energetically consistent conditions lead to the smallest crack driving force, and the permeable conditions lead to the largest crack driving force. Calculations also show that positive electric fields tend to inhibit fracture, whereas negative electric fields tend to promote fracture. |
| Freie Schlagworte: | Phase field simulation - Crack driving force - Fracture in ferroelectrics - Electric boundary condition |
| Zusätzliche Informationen: | SFB 595 C3 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik > Fachgebiet Kontinuumsmechanik DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > C - Modellierung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > C - Modellierung > Teilprojekt C3: Mikroskopische Untersuchungen zur Defektagglomeration und deren Auswirkungen auf die Beweglichkeit von Domänenwänden |
| Hinterlegungsdatum: | 16 Aug 2011 14:00 |
| Letzte Änderung: | 26 Jan 2024 09:21 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum