A strain energy criterion for failure of floating ice sheets
A failure criterion for floating ice sheets under stationary loads is presented, based on the concept of strain energy per unit volume and the results of some 40 prototype loading tests. The practical requirement for a time-independent failure criterion for ice, which is a viscoelastic material and...
Published in: | Canadian Journal of Civil Engineering |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Canadian Science Publishing
1978
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Online Access: | http://dx.doi.org/10.1139/l78-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/l78-040 |
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crcansciencepubl:10.1139/l78-040 2024-09-15T18:12:16+00:00 A strain energy criterion for failure of floating ice sheets Beltaos, S. 1978 http://dx.doi.org/10.1139/l78-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/l78-040 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Civil Engineering volume 5, issue 3, page 352-361 ISSN 0315-1468 1208-6029 journal-article 1978 crcansciencepubl https://doi.org/10.1139/l78-040 2024-08-01T04:10:02Z A failure criterion for floating ice sheets under stationary loads is presented, based on the concept of strain energy per unit volume and the results of some 40 prototype loading tests. The practical requirement for a time-independent failure criterion for ice, which is a viscoelastic material and thus subject to creep, is noted. Existing failure criteria are reviewed and shown to be unable to handle many practical situations. Subsequently, the concept of strain energy per unit volume is formulated and shown to provide a satisfactory failure criterion under varied loading histories. Analysis of the test results indicated the existence of a distinct instant marking the onset of failure of a loaded ice sheet. Because the behaviour of a loaded ice sheet between this instant and the final breakthrough of the load is partially random, it is suggested that the former be used as the practical limit of safety. Article in Journal/Newspaper Ice Sheet Canadian Science Publishing Canadian Journal of Civil Engineering 5 3 352 361 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
A failure criterion for floating ice sheets under stationary loads is presented, based on the concept of strain energy per unit volume and the results of some 40 prototype loading tests. The practical requirement for a time-independent failure criterion for ice, which is a viscoelastic material and thus subject to creep, is noted. Existing failure criteria are reviewed and shown to be unable to handle many practical situations. Subsequently, the concept of strain energy per unit volume is formulated and shown to provide a satisfactory failure criterion under varied loading histories. Analysis of the test results indicated the existence of a distinct instant marking the onset of failure of a loaded ice sheet. Because the behaviour of a loaded ice sheet between this instant and the final breakthrough of the load is partially random, it is suggested that the former be used as the practical limit of safety. |
format |
Article in Journal/Newspaper |
author |
Beltaos, S. |
spellingShingle |
Beltaos, S. A strain energy criterion for failure of floating ice sheets |
author_facet |
Beltaos, S. |
author_sort |
Beltaos, S. |
title |
A strain energy criterion for failure of floating ice sheets |
title_short |
A strain energy criterion for failure of floating ice sheets |
title_full |
A strain energy criterion for failure of floating ice sheets |
title_fullStr |
A strain energy criterion for failure of floating ice sheets |
title_full_unstemmed |
A strain energy criterion for failure of floating ice sheets |
title_sort |
strain energy criterion for failure of floating ice sheets |
publisher |
Canadian Science Publishing |
publishDate |
1978 |
url |
http://dx.doi.org/10.1139/l78-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/l78-040 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Canadian Journal of Civil Engineering volume 5, issue 3, page 352-361 ISSN 0315-1468 1208-6029 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/l78-040 |
container_title |
Canadian Journal of Civil Engineering |
container_volume |
5 |
container_issue |
3 |
container_start_page |
352 |
op_container_end_page |
361 |
_version_ |
1810449846166880256 |