Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach
ABSTRACT Results of numerical simulations of co-axial deformation of pure ice up to high-strain, combining full-field modelling with recrystallisation are presented. Grain size and lattice preferred orientation analysis and comparisons between simulations at different strain-rates show how recrystal...
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Online Access: | http://dx.doi.org/10.1017/jog.2016.28 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016000289 |
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crcambridgeupr:10.1017/jog.2016.28 2024-03-03T08:46:05+00:00 Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach LLORENS, MARIA-GEMA GRIERA, ALBERT BONS, PAUL D. ROESSIGER, JENS LEBENSOHN, RICARDO EVANS, LYNN WEIKUSAT, ILKA 2016 http://dx.doi.org/10.1017/jog.2016.28 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016000289 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 62, issue 232, page 359-377 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 2016 crcambridgeupr https://doi.org/10.1017/jog.2016.28 2024-02-08T08:31:59Z ABSTRACT Results of numerical simulations of co-axial deformation of pure ice up to high-strain, combining full-field modelling with recrystallisation are presented. Grain size and lattice preferred orientation analysis and comparisons between simulations at different strain-rates show how recrystallisation has a major effect on the microstructure, developing larger and equi-dimensional grains, but a relatively minor effect on the development of a preferred orientation of c -axes. Although c -axis distributions do not vary much, recrystallisation appears to have a distinct effect on the relative activities of slip systems, activating the pyramidal slip system and affecting the distribution of a -axes. The simulations reveal that the survival probability of individual grains is strongly related to the initial grain size, but only weakly dependent on hard or soft orientations with respect to the flow field. Dynamic recrystallisation reduces initial hardening, which is followed by a steady state characteristic of pure-shear deformation. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 62 232 359 377 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes LLORENS, MARIA-GEMA GRIERA, ALBERT BONS, PAUL D. ROESSIGER, JENS LEBENSOHN, RICARDO EVANS, LYNN WEIKUSAT, ILKA Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach |
topic_facet |
Earth-Surface Processes |
description |
ABSTRACT Results of numerical simulations of co-axial deformation of pure ice up to high-strain, combining full-field modelling with recrystallisation are presented. Grain size and lattice preferred orientation analysis and comparisons between simulations at different strain-rates show how recrystallisation has a major effect on the microstructure, developing larger and equi-dimensional grains, but a relatively minor effect on the development of a preferred orientation of c -axes. Although c -axis distributions do not vary much, recrystallisation appears to have a distinct effect on the relative activities of slip systems, activating the pyramidal slip system and affecting the distribution of a -axes. The simulations reveal that the survival probability of individual grains is strongly related to the initial grain size, but only weakly dependent on hard or soft orientations with respect to the flow field. Dynamic recrystallisation reduces initial hardening, which is followed by a steady state characteristic of pure-shear deformation. |
format |
Article in Journal/Newspaper |
author |
LLORENS, MARIA-GEMA GRIERA, ALBERT BONS, PAUL D. ROESSIGER, JENS LEBENSOHN, RICARDO EVANS, LYNN WEIKUSAT, ILKA |
author_facet |
LLORENS, MARIA-GEMA GRIERA, ALBERT BONS, PAUL D. ROESSIGER, JENS LEBENSOHN, RICARDO EVANS, LYNN WEIKUSAT, ILKA |
author_sort |
LLORENS, MARIA-GEMA |
title |
Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach |
title_short |
Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach |
title_full |
Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach |
title_fullStr |
Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach |
title_full_unstemmed |
Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach |
title_sort |
dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/jog.2016.28 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016000289 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 62, issue 232, page 359-377 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2016.28 |
container_title |
Journal of Glaciology |
container_volume |
62 |
container_issue |
232 |
container_start_page |
359 |
op_container_end_page |
377 |
_version_ |
1792501962642554880 |