2D DEM of Ice Rubble: the effect of rate-dependent friction.
Lishman, B and Polojärvi, A (2015). 2D DEM of Ice Rubble: the effect of rate-dependent friction. Proceedings of the 23rd International Conference on Port and Ocean Engineering under Arctic Conditions. Trondheim, Norway 14 - 18 Jun 2015 London South Bank University.
|Authors||Lishman, B and Polojärvi, A|
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.
|Publisher||London South Bank University|
|Accepted author manuscript|
|14 Jun 2015|
|Publication process dates|
|Deposited||27 Jan 2017|
|Accepted||14 Jun 2015|
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