Critical slip and time dependence in sea ice friction

Journal article


Lishman, B and Sammonds, P (2013). Critical slip and time dependence in sea ice friction. Cold Regions Science and Technology. 90-91, pp. 9 - 13.
AuthorsLishman, B and Sammonds, P
Abstract

Recent research into sea ice friction has focussed on ways to provide a model which maintains much of the clarity and simplicity of Amonton's law, yet also accounts for memory effects. One promising avenue of research has been to adapt the rate- and state- dependent models which are prevalent in rock friction. In such models it is assumed that there is some fixed critical slip displacement, which is effectively a measure of the displacement over which memory effects might be considered important. Here we show experimentally that a fixed critical slip displacement is not a valid assumption in ice friction, whereas a constant critical slip time appears to hold across a range of parameters and scales. As a simple rule of thumb, memory effects persist to a significant level for 10 s. We then discuss the implications of this finding for modelling sea ice friction and for our understanding of friction in general.

Year2013
JournalCold Regions Science and Technology
Journal citation90-91, pp. 9 - 13
PublisherElsevier
ISSN1872-7441
Digital Object Identifier (DOI)doi:10.1016/j.coldregions.2013.03.004
Publication dates
Print23 Jun 2013
Publication process dates
Deposited17 Jan 2017
Accepted author manuscript
License
CC BY-NC-ND 4.0
File description
Journal Article
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https://openresearch.lsbu.ac.uk/item/878zx

Accepted author manuscript

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