Evaluation of the criticality of cracks in ice shelves using finite element simulations
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 i...
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2012
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ftdoajarticles:oai:doaj.org/article:33bfb058736143709724fbabfaf20d8d 2023-05-15T14:05:17+02:00 Evaluation of the criticality of cracks in ice shelves using finite element simulations C. Plate R. Müller A. Humbert D. Gross 2012-09-01T00:00:00Z https://doi.org/10.5194/tc-6-973-2012 https://doaj.org/article/33bfb058736143709724fbabfaf20d8d EN eng Copernicus Publications http://www.the-cryosphere.net/6/973/2012/tc-6-973-2012.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-6-973-2012 1994-0416 1994-0424 https://doaj.org/article/33bfb058736143709724fbabfaf20d8d The Cryosphere, Vol 6, Iss 5, Pp 973-984 (2012) Environmental sciences GE1-350 Geology QE1-996.5 article 2012 ftdoajarticles https://doi.org/10.5194/tc-6-973-2012 2022-12-31T10:51:19Z 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 K I 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 K I for dry and water filled cracks are compared to critical values K Ic from measurements that can be found in literature. Article in Journal/Newspaper Antarc* Antarctica Ice Shelf Ice Shelves The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 6 5 973 984 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 C. Plate R. Müller A. Humbert D. Gross Evaluation of the criticality of cracks in ice shelves using finite element simulations |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
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 K I 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 K I for dry and water filled cracks are compared to critical values K Ic from measurements that can be found in literature. |
format |
Article in Journal/Newspaper |
author |
C. Plate R. Müller A. Humbert D. Gross |
author_facet |
C. Plate R. Müller A. Humbert D. Gross |
author_sort |
C. Plate |
title |
Evaluation of the criticality of cracks in ice shelves using finite element simulations |
title_short |
Evaluation of the criticality of cracks in ice shelves using finite element simulations |
title_full |
Evaluation of the criticality of cracks in ice shelves using finite element simulations |
title_fullStr |
Evaluation of the criticality of cracks in ice shelves using finite element simulations |
title_full_unstemmed |
Evaluation of the criticality of cracks in ice shelves using finite element simulations |
title_sort |
evaluation of the criticality of cracks in ice shelves using finite element simulations |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/tc-6-973-2012 https://doaj.org/article/33bfb058736143709724fbabfaf20d8d |
genre |
Antarc* Antarctica Ice Shelf Ice Shelves The Cryosphere |
genre_facet |
Antarc* Antarctica Ice Shelf Ice Shelves The Cryosphere |
op_source |
The Cryosphere, Vol 6, Iss 5, Pp 973-984 (2012) |
op_relation |
http://www.the-cryosphere.net/6/973/2012/tc-6-973-2012.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-6-973-2012 1994-0416 1994-0424 https://doaj.org/article/33bfb058736143709724fbabfaf20d8d |
op_doi |
https://doi.org/10.5194/tc-6-973-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
5 |
container_start_page |
973 |
op_container_end_page |
984 |
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1766277097275260928 |