Strain localization and fracture of cylindrical ice specimens under confining pressure
A group of laboratory tests were conducted at Memorial University of Newfoundland with cylindrical ice specimens. The specimens were made with both laboratory ice and iceberg ice. In each test, the cylindrical specimen was triaxially confined at different pressure levels and an external constant dev...
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Format: | Article in Journal/Newspaper |
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Lulea University of Technology
2005
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:07b89797-3e70-4df6-85a7-a181de4fe2cc 2023-05-15T14:22:16+02:00 Strain localization and fracture of cylindrical ice specimens under confining pressure Li, Chuanke Jordaan, Ian Barrette, Paul 2005 text https://nrc-publications.canada.ca/eng/view/author/version/?id=07b89797-3e70-4df6-85a7-a181de4fe2cc https://nrc-publications.canada.ca/eng/view/object/?id=07b89797-3e70-4df6-85a7-a181de4fe2cc https://nrc-publications.canada.ca/fra/voir/objet/?id=07b89797-3e70-4df6-85a7-a181de4fe2cc eng eng Lulea University of Technology issn:0376-6756 issn:2077-7841 Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC, 18th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2005, June 26-30, 2005, Potsdam, NY, USA, Volume: 2005, Publication date: 2005, Pages: 213–224 article 2005 ftnrccanada 2021-09-01T06:36:40Z A group of laboratory tests were conducted at Memorial University of Newfoundland with cylindrical ice specimens. The specimens were made with both laboratory ice and iceberg ice. In each test, the cylindrical specimen was triaxially confined at different pressure levels and an external constant deviatoric stress was exerted in the longitudinal direction. During the tests, some specimens showed a band of strain location in some cases leading to shear fracture. All those specimen showing strain localization or shear fracture made of laboratory ice were confined at relative low pressure levels ( ≤ 10 MPa) or high pressure levels ( ≥ 50 MPa). There was no strain localization or shear fracture observed at medium confinement levels. Strain localization or shear fracture observed in specimens made of iceberg ice was less pressure-dependent but initial flaws were observed in each specimen before the tests. Analysis shows that nonhomogeneity in the specimen is the likely cause of the localization. This has been confirmed by finite element simulations. Peer reviewed: Yes NRC publication: No Article in Journal/Newspaper Arctic University of Newfoundland National Research Council Canada: NRC Publications Archive |
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Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
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ftnrccanada |
language |
English |
description |
A group of laboratory tests were conducted at Memorial University of Newfoundland with cylindrical ice specimens. The specimens were made with both laboratory ice and iceberg ice. In each test, the cylindrical specimen was triaxially confined at different pressure levels and an external constant deviatoric stress was exerted in the longitudinal direction. During the tests, some specimens showed a band of strain location in some cases leading to shear fracture. All those specimen showing strain localization or shear fracture made of laboratory ice were confined at relative low pressure levels ( ≤ 10 MPa) or high pressure levels ( ≥ 50 MPa). There was no strain localization or shear fracture observed at medium confinement levels. Strain localization or shear fracture observed in specimens made of iceberg ice was less pressure-dependent but initial flaws were observed in each specimen before the tests. Analysis shows that nonhomogeneity in the specimen is the likely cause of the localization. This has been confirmed by finite element simulations. Peer reviewed: Yes NRC publication: No |
format |
Article in Journal/Newspaper |
author |
Li, Chuanke Jordaan, Ian Barrette, Paul |
spellingShingle |
Li, Chuanke Jordaan, Ian Barrette, Paul Strain localization and fracture of cylindrical ice specimens under confining pressure |
author_facet |
Li, Chuanke Jordaan, Ian Barrette, Paul |
author_sort |
Li, Chuanke |
title |
Strain localization and fracture of cylindrical ice specimens under confining pressure |
title_short |
Strain localization and fracture of cylindrical ice specimens under confining pressure |
title_full |
Strain localization and fracture of cylindrical ice specimens under confining pressure |
title_fullStr |
Strain localization and fracture of cylindrical ice specimens under confining pressure |
title_full_unstemmed |
Strain localization and fracture of cylindrical ice specimens under confining pressure |
title_sort |
strain localization and fracture of cylindrical ice specimens under confining pressure |
publisher |
Lulea University of Technology |
publishDate |
2005 |
url |
https://nrc-publications.canada.ca/eng/view/author/version/?id=07b89797-3e70-4df6-85a7-a181de4fe2cc https://nrc-publications.canada.ca/eng/view/object/?id=07b89797-3e70-4df6-85a7-a181de4fe2cc https://nrc-publications.canada.ca/fra/voir/objet/?id=07b89797-3e70-4df6-85a7-a181de4fe2cc |
genre |
Arctic University of Newfoundland |
genre_facet |
Arctic University of Newfoundland |
op_relation |
issn:0376-6756 issn:2077-7841 Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC, 18th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2005, June 26-30, 2005, Potsdam, NY, USA, Volume: 2005, Publication date: 2005, Pages: 213–224 |
_version_ |
1766294908317990912 |