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Numerical Simulation of Ship Collision with Rafted Ice Based on Cohesive Element Method

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Abstract

The gradual increase in shipping and drilling activities in the Arctic regions has resulted in the increased importance of studying the structural safety of polar ships in various ice conditions. Rafted ice refers to a type of accumulated and overlapped sea ice; it is driven by external forces, such as wind and waves, and may exert high loads on ships and threaten their structural safety. Therefore, the properties of rafted ice and the construction of numerical models should be studied before exploring the interaction and collision between ships and rafted ice. Based on the nonlinear finite-element method, this paper introduces the cohesive element model for the simulation of rafted ice. The interaction between ships and rafted ice is studied, and the ice force of the hull is obtained. Numerical simulation results are compared with model test findings, and the effectiveness of the cohesive element method in the construction of the model of rafted ice materials is verified. On this basis, a multilayer rafted ice model is constructed, and its interaction with the ship is studied. The research unveils that rafted ice parts impede crack generation and slow down crack propagation to a certain extent.

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Funding

Funding The National Natural Science Foundation of China (Grant Nos. 52192693, 52192690, 51979051, 51979056 and U20A20327) and the National Key Research and Development Program of China (Grant No. 2021YFC2803400)

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Correspondence to Baoyu Ni.

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Competing interest The authors have no competing interests to declare that are relevant to the content of this article.

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Article Highlights

• Ship collision with rafted ice was simulated by using cohesive element method.

• Rafted ice material model was validated against model test.

• Crack propagation and failure process of rafted ice were obtained in the simulations.

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Ni, B., Wang, Y., Xu, Y. et al. Numerical Simulation of Ship Collision with Rafted Ice Based on Cohesive Element Method. J. Marine. Sci. Appl. 23, 127–136 (2024). https://doi.org/10.1007/s11804-024-00418-1

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  • DOI: https://doi.org/10.1007/s11804-024-00418-1

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