Plate, Carolin ; Müller, Ralf ; Humbert, Angelika ; Gross, Dietmar (2014)
Finite Element Simulation of Frost Wedging in Ice Shelves.
In: PAMM — Proceedings in Applied Mathematics and Mechanics, 14 (1)
doi: 10.1002/pamm.201410058
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Break-up events in ice shelves have been studied extensively during the last years. One popular assumption links disintegration events to surface melting of the ice shelf in conjunction with growing melt-water ponds, leading to hydro-fracture. As this explanation only holds during warm seasons 1, the possibility of frost wedging as forcing mechanism for autumn and winter break-up events is considered. Frost wedging can only occur if a closed ice lid seals the water inside the crack. Hence, the present study of frost wedging in a single crack uses ice lid thicknesses to evaluate the additional pressure on the crack faces. The investigation of the resulting stress intensity factor as a measure of crack criticality follows consequently. The results show that freezing water inside a crack can result in unstable crack growth of an initially stable water filled crack. (© 2014 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim)
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Plate, Carolin ; Müller, Ralf ; Humbert, Angelika ; Gross, Dietmar |
| Art des Eintrags: | Bibliographie |
| Titel: | Finite Element Simulation of Frost Wedging in Ice Shelves |
| Sprache: | Englisch |
| Publikationsjahr: | 2014 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | PAMM — Proceedings in Applied Mathematics and Mechanics |
| Jahrgang/Volume einer Zeitschrift: | 14 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1002/pamm.201410058 |
| URL / URN: | https://onlinelibrary.wiley.com/doi/abs/10.1002/pamm.2014100... |
| Kurzbeschreibung (Abstract): | Break-up events in ice shelves have been studied extensively during the last years. One popular assumption links disintegration events to surface melting of the ice shelf in conjunction with growing melt-water ponds, leading to hydro-fracture. As this explanation only holds during warm seasons 1, the possibility of frost wedging as forcing mechanism for autumn and winter break-up events is considered. Frost wedging can only occur if a closed ice lid seals the water inside the crack. Hence, the present study of frost wedging in a single crack uses ice lid thicknesses to evaluate the additional pressure on the crack faces. The investigation of the resulting stress intensity factor as a measure of crack criticality follows consequently. The results show that freezing water inside a crack can result in unstable crack growth of an initially stable water filled crack. (© 2014 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim) |
| 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 06:41 |
| Letzte Änderung: | 03 Mai 2022 06:41 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum