Creep and Strength of Frozen Soil Under Triaxial Compression.
A combined creep and strength model has been developed for the entire (primary, secondary and tertiary) creep and the long-term strength of frozen soil under multiaxial stress at both constant stresses and constant strain rates by a single (unified) constitutive equation. Secondary creep is assumed...
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ftdtic:ADA302885 2023-05-15T16:37:41+02:00 Creep and Strength of Frozen Soil Under Triaxial Compression. Fish, Anatoly M. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1994-12 text/html http://www.dtic.mil/docs/citations/ADA302885 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA302885 en eng http://www.dtic.mil/docs/citations/ADA302885 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Soil Mechanics Snow Ice and Permafrost *STRENGTH(MECHANICS) *CREEP *FROZEN SOILS RUPTURE STRAIN RATE ICE YIELD STRENGTH FAILURE(MECHANICS) COMPRESSIVE STRENGTH SILT TRIAXIAL STRESSES COMPRESSIVE LOADING KELLOVIAN SILT PE62784A Text 1994 ftdtic 2016-02-19T13:12:30Z A combined creep and strength model has been developed for the entire (primary, secondary and tertiary) creep and the long-term strength of frozen soil under multiaxial stress at both constant stresses and constant strain rates by a single (unified) constitutive equation. Secondary creep is assumed to be an inflection point of a creep curve defining time to failure. Secondary creep rate is described by a new flow law, the stress function of which includes the first invariant of the stress tensor. The model consists of four principal elements: a constitutive equation, a viscous flow equation and a yield criterion, all united by a time-to-failure function. The yield criterion is selected either in the form of a parabolic (extended) von Mises-Drucker-Prager model or a parabolic (extended) Mohr-Coulomb rupture model. The criteria take into account that, at a certain magnitude of the mean normal stress (sigma sub max), the shear strength of frozen soil reaches a maximum. The yield criteria are included in the time-to-failure function, the shape parameters of which are independent of the loading regime. The model has been verified using test data on creep and the long-term strength of frozen soil under triaxial compression at -10 deg C. (MM) Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Soil Mechanics Snow Ice and Permafrost *STRENGTH(MECHANICS) *CREEP *FROZEN SOILS RUPTURE STRAIN RATE ICE YIELD STRENGTH FAILURE(MECHANICS) COMPRESSIVE STRENGTH SILT TRIAXIAL STRESSES COMPRESSIVE LOADING KELLOVIAN SILT PE62784A |
spellingShingle |
Soil Mechanics Snow Ice and Permafrost *STRENGTH(MECHANICS) *CREEP *FROZEN SOILS RUPTURE STRAIN RATE ICE YIELD STRENGTH FAILURE(MECHANICS) COMPRESSIVE STRENGTH SILT TRIAXIAL STRESSES COMPRESSIVE LOADING KELLOVIAN SILT PE62784A Fish, Anatoly M. Creep and Strength of Frozen Soil Under Triaxial Compression. |
topic_facet |
Soil Mechanics Snow Ice and Permafrost *STRENGTH(MECHANICS) *CREEP *FROZEN SOILS RUPTURE STRAIN RATE ICE YIELD STRENGTH FAILURE(MECHANICS) COMPRESSIVE STRENGTH SILT TRIAXIAL STRESSES COMPRESSIVE LOADING KELLOVIAN SILT PE62784A |
description |
A combined creep and strength model has been developed for the entire (primary, secondary and tertiary) creep and the long-term strength of frozen soil under multiaxial stress at both constant stresses and constant strain rates by a single (unified) constitutive equation. Secondary creep is assumed to be an inflection point of a creep curve defining time to failure. Secondary creep rate is described by a new flow law, the stress function of which includes the first invariant of the stress tensor. The model consists of four principal elements: a constitutive equation, a viscous flow equation and a yield criterion, all united by a time-to-failure function. The yield criterion is selected either in the form of a parabolic (extended) von Mises-Drucker-Prager model or a parabolic (extended) Mohr-Coulomb rupture model. The criteria take into account that, at a certain magnitude of the mean normal stress (sigma sub max), the shear strength of frozen soil reaches a maximum. The yield criteria are included in the time-to-failure function, the shape parameters of which are independent of the loading regime. The model has been verified using test data on creep and the long-term strength of frozen soil under triaxial compression at -10 deg C. (MM) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Fish, Anatoly M. |
author_facet |
Fish, Anatoly M. |
author_sort |
Fish, Anatoly M. |
title |
Creep and Strength of Frozen Soil Under Triaxial Compression. |
title_short |
Creep and Strength of Frozen Soil Under Triaxial Compression. |
title_full |
Creep and Strength of Frozen Soil Under Triaxial Compression. |
title_fullStr |
Creep and Strength of Frozen Soil Under Triaxial Compression. |
title_full_unstemmed |
Creep and Strength of Frozen Soil Under Triaxial Compression. |
title_sort |
creep and strength of frozen soil under triaxial compression. |
publishDate |
1994 |
url |
http://www.dtic.mil/docs/citations/ADA302885 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA302885 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA302885 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027986852642816 |