2D DEM of ice rubble:the effect of rate-dependent friction

The friction coefficient of ice on ice is usually modeled as a constant. However, theory and experimental data show that ice-ice friction depends on the speed of sliding. In this paper we incorporate a rate-dependent friction coefficient into 2D discrete element method simulations of ice ensemble be...

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Main Authors: Lishman, Ben, Polojärvi, Attu
Format: Conference Object
Language:English
Published: 2015
Subjects:
Arctic
Online Access:https://researchportal.port.ac.uk/portal/en/publications/2d-dem-of-ice-rubble(3d79dce4-ee80-4ec3-ad7f-ba749999485b).html
https://researchportal.port.ac.uk/ws/files/2998172/Lishman_Polojarvi_Poac_Final_Submission.pdf
id ftunivportsmpubl:oai:researchportal.port.ac.uk:publications/3d79dce4-ee80-4ec3-ad7f-ba749999485b
record_format openpolar
spelling ftunivportsmpubl:oai:researchportal.port.ac.uk:publications/3d79dce4-ee80-4ec3-ad7f-ba749999485b 2023-05-15T14:24:14+02:00 2D DEM of ice rubble:the effect of rate-dependent friction Lishman, Ben Polojärvi, Attu 2015-06 application/pdf https://researchportal.port.ac.uk/portal/en/publications/2d-dem-of-ice-rubble(3d79dce4-ee80-4ec3-ad7f-ba749999485b).html https://researchportal.port.ac.uk/ws/files/2998172/Lishman_Polojarvi_Poac_Final_Submission.pdf eng eng info:eu-repo/semantics/openAccess Lishman , B & Polojärvi , A 2015 , ' 2D DEM of ice rubble : the effect of rate-dependent friction ' Paper presented at Ports and Oceans Under Arctic Conditions (POAC) , Trondheim , Norway , 14/06/15 - 18/06/15 , pp. 1-8 . conferenceObject 2015 ftunivportsmpubl 2017-09-28T19:34:49Z The friction coefficient of ice on ice is usually modeled as a constant. However, theory and experimental data show that ice-ice friction depends on the speed of sliding. In this paper we incorporate a rate-dependent friction coefficient into 2D discrete element method simulations of ice ensemble behaviour. Friction is high (0.7) at low sliding speeds (<10-6 ms-1), low (0.1) at high sliding speeds (>10-2 ms-1) and decreases log-linearly between these values. We show qualitatively and quantitatively how this affects the overall dynamics of a shear box experiment. Conference Object Arctic University of Portsmouth: Portsmouth Research Portal
institution Open Polar
collection University of Portsmouth: Portsmouth Research Portal
op_collection_id ftunivportsmpubl
language English
description The friction coefficient of ice on ice is usually modeled as a constant. However, theory and experimental data show that ice-ice friction depends on the speed of sliding. In this paper we incorporate a rate-dependent friction coefficient into 2D discrete element method simulations of ice ensemble behaviour. Friction is high (0.7) at low sliding speeds (<10-6 ms-1), low (0.1) at high sliding speeds (>10-2 ms-1) and decreases log-linearly between these values. We show qualitatively and quantitatively how this affects the overall dynamics of a shear box experiment.
format Conference Object
author Lishman, Ben
Polojärvi, Attu
spellingShingle Lishman, Ben
Polojärvi, Attu
2D DEM of ice rubble:the effect of rate-dependent friction
author_facet Lishman, Ben
Polojärvi, Attu
author_sort Lishman, Ben
title 2D DEM of ice rubble:the effect of rate-dependent friction
title_short 2D DEM of ice rubble:the effect of rate-dependent friction
title_full 2D DEM of ice rubble:the effect of rate-dependent friction
title_fullStr 2D DEM of ice rubble:the effect of rate-dependent friction
title_full_unstemmed 2D DEM of ice rubble:the effect of rate-dependent friction
title_sort 2d dem of ice rubble:the effect of rate-dependent friction
publishDate 2015
url https://researchportal.port.ac.uk/portal/en/publications/2d-dem-of-ice-rubble(3d79dce4-ee80-4ec3-ad7f-ba749999485b).html
https://researchportal.port.ac.uk/ws/files/2998172/Lishman_Polojarvi_Poac_Final_Submission.pdf
genre Arctic
genre_facet Arctic
op_source Lishman , B & Polojärvi , A 2015 , ' 2D DEM of ice rubble : the effect of rate-dependent friction ' Paper presented at Ports and Oceans Under Arctic Conditions (POAC) , Trondheim , Norway , 14/06/15 - 18/06/15 , pp. 1-8 .
op_rights info:eu-repo/semantics/openAccess
_version_ 1766296689852809216

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