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Fragmentation of Ice Sheets during Impact

A.P.S.Selvadurai1
Department of Civil Engineering and Applied Mechanics, McGill University, Montréal, QC, Canada H3A 2K6

Computer Modeling in Engineering & Sciences 2009, 52(3), 259-278. https://doi.org/10.3970/cmes.2009.052.259

Abstract

The paper deals with a computational approach for modelling the fragmentation of ice sheets during their impact with stationary structures. The modelling takes into consideration the intact continuum behaviour of the ice as a rate-sensitive elastoplastic material. During impact, the ice sheet can undergo fragmentation, which is controlled by a brittle strength criterion based on the current stress state. The fragmentation allows the generation of discrete elements of the ice sheet, the movements of which are governed by the equations of motion. The contact between individual fragments is governed by a Coulomb criterion. The individual fragments can themselves undergo further fragmentation with a size-dependent brittle strength criterion. The modelling is applied to examine the interaction and fragmentation of an ice sheet of finite dimensions as it impacts a stationary object.

Keywords

Ice-structure interaction, viscoplasticity, fragmentation, dynamics of ice sheets, rate sensitivity, discrete elements.

Cite This Article

, A. (2009). Fragmentation of Ice Sheets during Impact. CMES-Computer Modeling in Engineering & Sciences, 52(3), 259–278.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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