Author(s): Arttu Polojarvi; Jukka Tuhkuri
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Keywords: No Keywords
Abstract: The discrete element method has been successfully used in numerical modelling of ice rubble, ice pile-up processes, ridge keel deformation and other discrete problems in ice mechanics. In the discrete element method, each ice block and the forces between blocks are modelled and the motion of the blocks is solved. This paper describes modelling of freeze bonds within ridge keels by using a two dimensional combined finite-discrete element method. In this method, each ice block in a ridge keel is meshed into finite elements to allow modelling of block deformations. The freeze bonds between the ice blocks are modelled by using cohesive bonds between the blocks. Failure of the bonds due to tension and shear is allowed. The model was applied to simulation of ridge keel punch through tests. Example simulation runs with different bond strengths were performed. Simulation results were compared to full-scale test results.
Year: 2010