Memory in sea ice friction

Conference item


Lishman, B and Sammonds, P (2013). Memory in sea ice friction. 22nd International Conference on Port and Ocean Engineering under Arctic Conditions (POAC). Espoo, Finland 09 - 13 Jun 2013 London South Bank University.
AuthorsLishman, B and Sammonds, P
Abstract

Friction between sea ice floes is a control on rafting, ridging, and in-plane sliding, and is therefore relevant to a range of engineering problems. Understanding sea ice friction is complicated, because the contact surfaces abrade and melt as sliding occurs. Currently most representations of sea ice friction (for example in discrete element modelling) use Amontons’ law for friction, with a wide uncertainty over μ. In this paper we discuss recent work on incorporating memory into an empirical model of sea ice friction. We present a simple model with rate and state dependence derived from laboratory results, and show how this model predicts varying friction on a sliding surface under varying slip rate. We then use this model within a discrete element model to investigate the importance of friction modelling to the modelling of sea ice behaviour as aggregated across many floes.

Year2013
PublisherLondon South Bank University
Accepted author manuscript
License
CC BY 4.0
Publication dates
Print09 Jun 2013
Publication process dates
Deposited14 Feb 2017
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https://openresearch.lsbu.ac.uk/item/87900

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