Plate, C. ; Müller, R. ; Humbert, A. ; Gross, D. (2012)
Evaluation of the criticality of cracks in ice shelves using finite element simulations.
In: The Cryosphere, 6 (5)
doi: 10.5194/tc-6-973-2012
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The ongoing disintegration of large ice shelf parts in Antarctica raise the need for a better understanding of the physical processes that trigger critical crack growth in ice shelves. Finite elements in combination with configurational forces facilitate the analysis of single surface fractures in ice under various boundary conditions and material parameters. The principles of linear elastic fracture mechanics are applied to show the strong influence of different depth dependent functions for the density and the Young's modulus on the stress intensity factor KI at the crack tip. Ice, for this purpose, is treated as an elastically compressible solid and the consequences of this choice in comparison to the predominant incompressible approaches are discussed. The computed stress intensity factors KI for dry and water filled cracks are compared to critical values KIc from measurements that can be found in literature.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Plate, C. ; Müller, R. ; Humbert, A. ; Gross, D. |
| Art des Eintrags: | Bibliographie |
| Titel: | Evaluation of the criticality of cracks in ice shelves using finite element simulations |
| Sprache: | Englisch |
| Publikationsjahr: | September 2012 |
| Verlag: | Copernicus |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | The Cryosphere |
| Jahrgang/Volume einer Zeitschrift: | 6 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.5194/tc-6-973-2012 |
| URL / URN: | https://tc.copernicus.org/articles/6/973/2012/ |
| Kurzbeschreibung (Abstract): | The ongoing disintegration of large ice shelf parts in Antarctica raise the need for a better understanding of the physical processes that trigger critical crack growth in ice shelves. Finite elements in combination with configurational forces facilitate the analysis of single surface fractures in ice under various boundary conditions and material parameters. The principles of linear elastic fracture mechanics are applied to show the strong influence of different depth dependent functions for the density and the Young's modulus on the stress intensity factor KI at the crack tip. Ice, for this purpose, is treated as an elastically compressible solid and the consequences of this choice in comparison to the predominant incompressible approaches are discussed. The computed stress intensity factors KI for dry and water filled cracks are compared to critical values KIc from measurements that can be found in literature. |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik > Fachgebiet Kontinuumsmechanik |
| Hinterlegungsdatum: | 03 Mai 2022 11:15 |
| Letzte Änderung: | 03 Mai 2022 11:16 |
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