An investigation of the failure envelope of granular/discontinuous-columnar sea ice

The three-dimensional failure envelope for granular/ discontinuous-columnar sea ice has been investigated over a range of nominal strain rates from 9 X 10[-6]s[-1] to 4.4 X 10[-4]s[-1] by using confined compression tests. Both the applied load and side-confining load were measured. The tests were pe...

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Published in:Cold Regions Science and Technology
Main Authors: Timco, G. W., Frederking, R. M. W.
Format: Article in Journal/Newspaper
Language:English
Published: 1984
Subjects:
ice
Online Access:https://doi.org/10.1016/0165-232X(84)90044-2
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spelling ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20378615 2024-09-15T17:58:35+00:00 An investigation of the failure envelope of granular/discontinuous-columnar sea ice Timco, G. W. Frederking, R. M. W. 1984-06 text https://doi.org/10.1016/0165-232X(84)90044-2 https://nrc-publications.canada.ca/eng/view/ft/?id=630d117e-4912-4c49-b8e6-2b9aab8bf95a https://nrc-publications.canada.ca/eng/view/object/?id=630d117e-4912-4c49-b8e6-2b9aab8bf95a https://nrc-publications.canada.ca/fra/voir/objet/?id=630d117e-4912-4c49-b8e6-2b9aab8bf95a eng eng issn:0165-232X Cold Regions Science and Technology, Volume: 9, Issue: 1, Publication date: 1984-06, Pages: 17–27 doi:10.1016/0165-232X(84)90044-2 report_number:DBR-P-1211 ice glace strain déformation compressive strength résistance à la compression compression tests essai de compression granular/ discontinuous columnar ice confined compression tests Beaufort Sea loading rate article 1984 ftnrccanada https://doi.org/10.1016/0165-232X(84)90044-2 2024-08-05T14:05:07Z The three-dimensional failure envelope for granular/ discontinuous-columnar sea ice has been investigated over a range of nominal strain rates from 9 X 10[-6]s[-1] to 4.4 X 10[-4]s[-1] by using confined compression tests. Both the applied load and side-confining load were measured. The tests were performed on samples cut from a solid block of ice in the Beaufort Sea which structurally was granular with some banding of discontinuous-columnar ice to a depth of 1.2 m. The results indicate the overall shape and size of the failure envelope of this ice, and show that although the shape is independent of loading rate, the size increases with loading rate. An analytical expression is derived which mathematically describes the failure envelope in three- dimensional space. L'enveloppe tridimensionnelle de rupture de la glace columnaire discontinue/granulaire a fait l'objet d'études au moyen d'essais de compression avec étreinte latérale, dans un intervalle de vitesses de déformation nominale allant de 9 x 10[-6]s[-1] à 4,4 x 10[-4]s[-1]. On a mesuré à la fois la charge appliquée et l'étreinte latérale. Les essais ont été effectués sur des échantillons découpés dans un bloc de glace solide provenant de la mer de Beaufort; cette glace était de structure granulaire et contenait quelques bandes de glace columnaire discontinue jusqu'à 1,2 m de profondeur. Les résultats indiquent la configuration et la dimension générales de l'enveloppe de rupture de cette glace, et démontrent que même si la configuration ne dépend pas de la vitesse d'application de la charge, la dimension augmente en fonction de cette vitesse d'application. On en déduit une expression analytique, qui décrit de facon mathématique l'enveloppe de rupture dans un espace tridimensionnel. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Beaufort Sea Mer de Beaufort Sea ice National Research Council Canada: NRC Publications Archive Cold Regions Science and Technology 9 1 17 27
institution Open Polar
collection National Research Council Canada: NRC Publications Archive
op_collection_id ftnrccanada
language English
topic ice
glace
strain
déformation
compressive strength
résistance à la compression
compression tests
essai de compression
granular/ discontinuous columnar ice
confined compression tests
Beaufort Sea
loading rate
spellingShingle ice
glace
strain
déformation
compressive strength
résistance à la compression
compression tests
essai de compression
granular/ discontinuous columnar ice
confined compression tests
Beaufort Sea
loading rate
Timco, G. W.
Frederking, R. M. W.
An investigation of the failure envelope of granular/discontinuous-columnar sea ice
topic_facet ice
glace
strain
déformation
compressive strength
résistance à la compression
compression tests
essai de compression
granular/ discontinuous columnar ice
confined compression tests
Beaufort Sea
loading rate
description The three-dimensional failure envelope for granular/ discontinuous-columnar sea ice has been investigated over a range of nominal strain rates from 9 X 10[-6]s[-1] to 4.4 X 10[-4]s[-1] by using confined compression tests. Both the applied load and side-confining load were measured. The tests were performed on samples cut from a solid block of ice in the Beaufort Sea which structurally was granular with some banding of discontinuous-columnar ice to a depth of 1.2 m. The results indicate the overall shape and size of the failure envelope of this ice, and show that although the shape is independent of loading rate, the size increases with loading rate. An analytical expression is derived which mathematically describes the failure envelope in three- dimensional space. L'enveloppe tridimensionnelle de rupture de la glace columnaire discontinue/granulaire a fait l'objet d'études au moyen d'essais de compression avec étreinte latérale, dans un intervalle de vitesses de déformation nominale allant de 9 x 10[-6]s[-1] à 4,4 x 10[-4]s[-1]. On a mesuré à la fois la charge appliquée et l'étreinte latérale. Les essais ont été effectués sur des échantillons découpés dans un bloc de glace solide provenant de la mer de Beaufort; cette glace était de structure granulaire et contenait quelques bandes de glace columnaire discontinue jusqu'à 1,2 m de profondeur. Les résultats indiquent la configuration et la dimension générales de l'enveloppe de rupture de cette glace, et démontrent que même si la configuration ne dépend pas de la vitesse d'application de la charge, la dimension augmente en fonction de cette vitesse d'application. On en déduit une expression analytique, qui décrit de facon mathématique l'enveloppe de rupture dans un espace tridimensionnel. Peer reviewed: Yes NRC publication: Yes
format Article in Journal/Newspaper
author Timco, G. W.
Frederking, R. M. W.
author_facet Timco, G. W.
Frederking, R. M. W.
author_sort Timco, G. W.
title An investigation of the failure envelope of granular/discontinuous-columnar sea ice
title_short An investigation of the failure envelope of granular/discontinuous-columnar sea ice
title_full An investigation of the failure envelope of granular/discontinuous-columnar sea ice
title_fullStr An investigation of the failure envelope of granular/discontinuous-columnar sea ice
title_full_unstemmed An investigation of the failure envelope of granular/discontinuous-columnar sea ice
title_sort investigation of the failure envelope of granular/discontinuous-columnar sea ice
publishDate 1984
url https://doi.org/10.1016/0165-232X(84)90044-2
https://nrc-publications.canada.ca/eng/view/ft/?id=630d117e-4912-4c49-b8e6-2b9aab8bf95a
https://nrc-publications.canada.ca/eng/view/object/?id=630d117e-4912-4c49-b8e6-2b9aab8bf95a
https://nrc-publications.canada.ca/fra/voir/objet/?id=630d117e-4912-4c49-b8e6-2b9aab8bf95a
genre Beaufort Sea
Mer de Beaufort
Sea ice
genre_facet Beaufort Sea
Mer de Beaufort
Sea ice
op_relation issn:0165-232X
Cold Regions Science and Technology, Volume: 9, Issue: 1, Publication date: 1984-06, Pages: 17–27
doi:10.1016/0165-232X(84)90044-2
report_number:DBR-P-1211
op_doi https://doi.org/10.1016/0165-232X(84)90044-2
container_title Cold Regions Science and Technology
container_volume 9
container_issue 1
container_start_page 17
op_container_end_page 27
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