Numerical simulation on the ice load acting on ARAON using damage-based erosion model

초록

This paper presents an advanced numerical analysis technique to simulate the level ice-ship interaction phenomenon using finite element method. To simulate ice breaking phenomenon with reality, the traditional Drucker-Prager plasticity model was combined with damage mechanics and linked with the element erosion technique to realize crack formation and propagation in level ice colliding with a moving structure. In order to capture dynamic motions of submerged broken ice flakes, both dynamic drag forces and static buoyancy forces were taken into account. Using the model described above, the ice resistance acting on a rigid ship running through level ice with different forward speeds was numerically calculated and compared with model basin test results obtained in ice tank. Also, efforts were made to decompose total ice resistance into breaking and submergence ones by running additional simulation where ice flakes were removed right after breaking. © 2021 Lulea University of Technology. All rights reserved.

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