In this study, we used multi-body dynamic (MBD) technique to numerically calculate the ice load of the icebreaker in pack ice conditions. Because MBD is a useful method for analyzing the dynamic behavior of a rigid body using the contact mechanism, MBD analyzes the interaction between each ice and icebreaker. Each ice and icebreaker also interact with the fluid. Simultaneously analyzing the interaction between fluids and float is difficult and complex, so Computational Fluid Dynamics (CFD) is used to simulate fluid-ice interaction and apply it to ice modeling. The simulation was performed in the time domain and compared to the average ice impact load obtained from experiments in an ice traction tank.

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