Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach
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...
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Cambridge University Press
2016
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Online Access: | https://epic.awi.de/id/eprint/40934/ https://epic.awi.de/id/eprint/40934/1/llorens2016jg.pdf https://hdl.handle.net/10013/epic.c5a97ae9-78f5-4045-8b6e-0dfc4bb7def7 |
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ftawi:oai:epic.awi.de:40934 2024-09-15T18:15:42+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 application/pdf https://epic.awi.de/id/eprint/40934/ https://epic.awi.de/id/eprint/40934/1/llorens2016jg.pdf https://hdl.handle.net/10013/epic.c5a97ae9-78f5-4045-8b6e-0dfc4bb7def7 unknown Cambridge University Press https://epic.awi.de/id/eprint/40934/1/llorens2016jg.pdf Llorens, M. G. , GRIERA, A. , BONS, P. D. , ROESSIGER, J. , LEBENSOHN, R. , EVANS, L. and Weikusat, I. orcid:0000-0002-3023-6036 (2016) Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach , Journal of Glaciology, 62 , pp. 359-377 . doi:10.1017/jog.2016.28 <https://doi.org/10.1017/jog.2016.28> , hdl:10013/epic.c5a97ae9-78f5-4045-8b6e-0dfc4bb7def7 EPIC3Journal of Glaciology, Cambridge University Press, 62, pp. 359-377, ISSN: 0022-1430 Article isiRev 2016 ftawi https://doi.org/10.1017/jog.2016.28 2024-06-24T04:14:20Z 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Journal of Glaciology 62 232 359 377 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
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 |
spellingShingle |
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 |
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 |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/40934/ https://epic.awi.de/id/eprint/40934/1/llorens2016jg.pdf https://hdl.handle.net/10013/epic.c5a97ae9-78f5-4045-8b6e-0dfc4bb7def7 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
EPIC3Journal of Glaciology, Cambridge University Press, 62, pp. 359-377, ISSN: 0022-1430 |
op_relation |
https://epic.awi.de/id/eprint/40934/1/llorens2016jg.pdf Llorens, M. G. , GRIERA, A. , BONS, P. D. , ROESSIGER, J. , LEBENSOHN, R. , EVANS, L. and Weikusat, I. orcid:0000-0002-3023-6036 (2016) Dynamic recrystallisation of ice aggregates during co-axial viscoplastic deformation: a numerical approach , Journal of Glaciology, 62 , pp. 359-377 . doi:10.1017/jog.2016.28 <https://doi.org/10.1017/jog.2016.28> , hdl:10013/epic.c5a97ae9-78f5-4045-8b6e-0dfc4bb7def7 |
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_ |
1810453639025655808 |