Numerical model for a failure process of an ice sheet

Model for describing a three-dimensional continuous failure process of an ice sheet is introduced. The presented model based on the combined finite-discrete element method. consists polyhedral rigid discrete elements joined by lattice Timoshenko beam elements, which go through cohesive softening upon failure. contact accounts inter-particle friction and local in contacts. carefully validated against laboratory experiment, where pushed inclined plane. Convincing agreement between modelled experimental found. effect tessellation size tested found to be only moderate. compares favorably earlier ones: modelling results agree, domain sizes used can large, processes are long duration. Requirements numerical discussed.