Floating ice generation method and ship-ice collision analysis with power-law distribution considered

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (2) : 169-176.

SHI Yuanhe1,LIU Kun2,YU Tongqiang2,WANG Jiaxia2

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Abstract

With the Arctic glaciers continue to melt and spread, collisions between polar ships and floating ice are inevitable. The change in the distribution of floating ice is one of the important factors affecting ship-ice collision. At present, studies on the distribution of floating ice are mostly based on image data recognition, and it is mostly simplified as regular square ice in the simulation calculation, which is different from the actual distribution and shape of floating ice. Therefore, this paper written subroutines that generated the ice field based on the theory of power-law distribution and the characteristics of ice shape in ANSYS/LS-Dyna software. On this basis, the coupling model of the polar ships, the broken ice field, and the flow field are established. The fluid-structure interaction (FSI) method and the environment border are applied to solve the floating-issue of ships and ice floes collision. Through the numerical simulation calculation of ship-ice floes collision, the results show that the changes of parameters in the process of the ship-ice floes collision that the situation of ice floes movement, the load of ship collision, damage deformation, and the energy absorption of hull structures. The coupling rule between ship and ice in the process of much time and continuous collision is analyzed. Therefore, the research results in this paper can provide a reference for the safety design of polar navigating ships.

Key words

Ship-Ice Collision / Probability Distribution of Floating Ice / Fluid-Structure Coupling Method / Numerical Simulation

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SHI Yuanhe1,LIU Kun2,YU Tongqiang2,WANG Jiaxia2. Floating ice generation method and ship-ice collision analysis with power-law distribution considered[J]. Journal of Vibration and Shock, 2022, 41(2): 169-176

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