A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments
The response of ice to applied stress on ice-sheet flow timescales is commonly described by a non-linear incompressible viscous fluid, for which the deviatoric stress has a quadratic relation in the strain rate with two response coefficient functions depending on two principal strain-rate invariants...
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Cambridge University Press
2022
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ftdoajarticles:oai:doaj.org/article:f0f7880f2e3f4f69abe994357796f294 2023-05-15T16:41:02+02:00 A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments R. Staroszczyk L. W. Morland 2022-08-01T00:00:00Z https://doi.org/10.1017/jog.2021.113 https://doaj.org/article/f0f7880f2e3f4f69abe994357796f294 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143021001131/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.113 0022-1430 1727-5652 https://doaj.org/article/f0f7880f2e3f4f69abe994357796f294 Journal of Glaciology, Vol 68, Pp 625-635 (2022) Constitutive law isotropic response polar ice viscous creep Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2022 ftdoajarticles https://doi.org/10.1017/jog.2021.113 2023-03-12T01:30:54Z The response of ice to applied stress on ice-sheet flow timescales is commonly described by a non-linear incompressible viscous fluid, for which the deviatoric stress has a quadratic relation in the strain rate with two response coefficient functions depending on two principal strain-rate invariants I2 and I3. Commonly, a coaxial (linear) relation between the deviatoric stress and strain rate, with dependence on one strain-rate invariant I2 in a stress formulation, equivalently dependence on one deviatoric stress invariant in a strain-rate formulation, is adopted. Glen's uni-axial stress experiments determined such a coaxial law for a strain-rate formulation. The criterion for both uni-axial and shear data to determine the same relation is determined. Here, we apply Steinemann's uni-axial stress and torsion data to determine the two stress response coefficients in a quadratic relation with dependence on a single invariant I2. There is a non-negligible quadratic term for some ranges of I2; that is, a coaxial relation with dependence on one invariant is not valid. The data does not, however, rule out a coaxial relation with dependence on two invariants. Article in Journal/Newspaper Ice Sheet Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 68 270 625 635 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Constitutive law isotropic response polar ice viscous creep Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Constitutive law isotropic response polar ice viscous creep Environmental sciences GE1-350 Meteorology. Climatology QC851-999 R. Staroszczyk L. W. Morland A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments |
topic_facet |
Constitutive law isotropic response polar ice viscous creep Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
The response of ice to applied stress on ice-sheet flow timescales is commonly described by a non-linear incompressible viscous fluid, for which the deviatoric stress has a quadratic relation in the strain rate with two response coefficient functions depending on two principal strain-rate invariants I2 and I3. Commonly, a coaxial (linear) relation between the deviatoric stress and strain rate, with dependence on one strain-rate invariant I2 in a stress formulation, equivalently dependence on one deviatoric stress invariant in a strain-rate formulation, is adopted. Glen's uni-axial stress experiments determined such a coaxial law for a strain-rate formulation. The criterion for both uni-axial and shear data to determine the same relation is determined. Here, we apply Steinemann's uni-axial stress and torsion data to determine the two stress response coefficients in a quadratic relation with dependence on a single invariant I2. There is a non-negligible quadratic term for some ranges of I2; that is, a coaxial relation with dependence on one invariant is not valid. The data does not, however, rule out a coaxial relation with dependence on two invariants. |
format |
Article in Journal/Newspaper |
author |
R. Staroszczyk L. W. Morland |
author_facet |
R. Staroszczyk L. W. Morland |
author_sort |
R. Staroszczyk |
title |
A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments |
title_short |
A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments |
title_full |
A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments |
title_fullStr |
A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments |
title_full_unstemmed |
A quadratic viscous fluid law for ice deduced from Steinemann's uni-axial compression and torsion experiments |
title_sort |
quadratic viscous fluid law for ice deduced from steinemann's uni-axial compression and torsion experiments |
publisher |
Cambridge University Press |
publishDate |
2022 |
url |
https://doi.org/10.1017/jog.2021.113 https://doaj.org/article/f0f7880f2e3f4f69abe994357796f294 |
genre |
Ice Sheet Journal of Glaciology |
genre_facet |
Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 68, Pp 625-635 (2022) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143021001131/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.113 0022-1430 1727-5652 https://doaj.org/article/f0f7880f2e3f4f69abe994357796f294 |
op_doi |
https://doi.org/10.1017/jog.2021.113 |
container_title |
Journal of Glaciology |
container_volume |
68 |
container_issue |
270 |
container_start_page |
625 |
op_container_end_page |
635 |
_version_ |
1766031475670515712 |