6533b7dcfe1ef96bd127337d

RESEARCH PRODUCT

A discrete-element model for viscoelastic deformation and fracture of glacial ice

Jussi TimonenJussi TimonenJan ÅStrömTimo RiikiläTuomas Tallinen

subject

Viscoelasticgeographygeography.geographical_feature_categoryta114IceDEMGeneral Physics and AstronomyGlacierMechanicsViscoelasticityPhysics::GeophysicsVolumetric flow rateIce dynamicsFragmentationHardware and ArchitectureDiscrete element modelElasticity (economics)Brittle fractureGeology

description

a b s t r a c t A discrete-element model was developed to study the behavior of viscoelastic materials that are allowed to fracture. Applicable to many materials, the main objective of this analysis was to develop a model specifically for ice dynamics. A realistic model of glacial ice must include elasticity, brittle fracture and slow viscous deformations. Here the model is described in detail and tested with several benchmark simulations. The model was used to simulate various ice-specific applications with resulting flow rates that were compatible with Glen's law, and produced under fragmentation fragment-size distributions that agreed with the known analytical and experimental results.

yearjournalcountryeditionlanguage
2015-10-01Computer Physics Communications
https://doi.org/10.1016/j.cpc.2015.04.009