Constitutive equations with pressure-dependent rheological parameters for describing ice creep
ABSTRACT Experimental data from creep tests on polycrystalline ice samples highlight not only the non-Newtonian behavior of ice but also suggest a critical dependence of the various rheological parameters upon the applied hydrostatic pressure. We propose a new modeling framework, based on implicit t...
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crcambridgeupr:10.1017/jog.2019.31 2024-03-03T08:46:03+00:00 Constitutive equations with pressure-dependent rheological parameters for describing ice creep ARCANGIOLI, MARTINA FARINA, ANGIOLO FUSI, LORENZO SACCOMANDI, GIUSEPPE 2019 http://dx.doi.org/10.1017/jog.2019.31 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143019000315 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 65, issue 252, page 557-564 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 2019 crcambridgeupr https://doi.org/10.1017/jog.2019.31 2024-02-08T08:35:32Z ABSTRACT Experimental data from creep tests on polycrystalline ice samples highlight not only the non-Newtonian behavior of ice but also suggest a critical dependence of the various rheological parameters upon the applied hydrostatic pressure. We propose a new modeling framework, based on implicit theories of continuum mechanics, that generalizes two well-known constitutive models by taking into account the effect of the pressure in the description of ice in creep. To ascertain the validity of the proposed models, we fit the physical parameters with experimental data for the elongational flow of ice samples. The results show good agreement with the experimental creep curves. In particular, the proposed generalized models reproduce the increase of the creep rate due to the presence of hydrostatic pressure. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 65 252 557 564 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes ARCANGIOLI, MARTINA FARINA, ANGIOLO FUSI, LORENZO SACCOMANDI, GIUSEPPE Constitutive equations with pressure-dependent rheological parameters for describing ice creep |
topic_facet |
Earth-Surface Processes |
description |
ABSTRACT Experimental data from creep tests on polycrystalline ice samples highlight not only the non-Newtonian behavior of ice but also suggest a critical dependence of the various rheological parameters upon the applied hydrostatic pressure. We propose a new modeling framework, based on implicit theories of continuum mechanics, that generalizes two well-known constitutive models by taking into account the effect of the pressure in the description of ice in creep. To ascertain the validity of the proposed models, we fit the physical parameters with experimental data for the elongational flow of ice samples. The results show good agreement with the experimental creep curves. In particular, the proposed generalized models reproduce the increase of the creep rate due to the presence of hydrostatic pressure. |
format |
Article in Journal/Newspaper |
author |
ARCANGIOLI, MARTINA FARINA, ANGIOLO FUSI, LORENZO SACCOMANDI, GIUSEPPE |
author_facet |
ARCANGIOLI, MARTINA FARINA, ANGIOLO FUSI, LORENZO SACCOMANDI, GIUSEPPE |
author_sort |
ARCANGIOLI, MARTINA |
title |
Constitutive equations with pressure-dependent rheological parameters for describing ice creep |
title_short |
Constitutive equations with pressure-dependent rheological parameters for describing ice creep |
title_full |
Constitutive equations with pressure-dependent rheological parameters for describing ice creep |
title_fullStr |
Constitutive equations with pressure-dependent rheological parameters for describing ice creep |
title_full_unstemmed |
Constitutive equations with pressure-dependent rheological parameters for describing ice creep |
title_sort |
constitutive equations with pressure-dependent rheological parameters for describing ice creep |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/jog.2019.31 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143019000315 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 65, issue 252, page 557-564 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2019.31 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
252 |
container_start_page |
557 |
op_container_end_page |
564 |
_version_ |
1792501874801246208 |