The concept of the Shoulder Ice Barrier (SIB) has previously been presented in a companion paper under the same title at OMAE 2006 (Gu¨rtner et al., 2006), whereas ice model tests of the SIB are presented in an accompanying paper at this year’s OMAE (Gu¨rtner and Gudmestad, 2008). The present paper investigates a computational model for simulating ice-SIB interactions. This involves the simulation of rubble accumulations and accordingly the exerted ice forces. The computational model is developed within the framework of finite elements. Characteristic fracture of ice is handled by introducing the Cohesive Zone Approach (CZA), wherein cohesive elements are placed in-between the finite element grid of the ice. Fracture may thereby occur along element boundaries with due regard to fracture properties such as traction and separation. Fracture and plastic deformation of the ice are hence co-existing, though competing, mechanisms, while accounting for the dynamics of the ice mass. We compare the computational results with the ones obtained during the model testing.

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