冰海结构物通常装备抗冰锥等倾斜面的抗冰结构物，用来减小平整冰移动产生的推挤载荷。平整冰推挤载荷是冰海结构物的重要设计技术指标，准确模拟平整冰推挤结构物的载荷特征和破碎冰堆积形态等规律具有重要意义。本文采用FEM-SPH耦合方法和有限元法分别模拟了平整冰推挤抗冰锥结构的过程和现象，分析了抗冰锥水线面直径对碎冰堆积形态及推挤载荷的影响规律。研究表明，与有限元法相比，FEM-SPH耦合方法不仅可以准确预报平整冰推挤结构的动态载荷，还可以直观再现破碎冰的堆积现象，有助于理解和分析平整冰与结构物的相互作用规律。本文的FEM-SPH耦合算法模型和分析结论可为研究和设计冰海结构物提供参考。
To reduce the pushing load caused by the movement of level ice, platforms in ice zone are usually equipped with anti-ice structures like ice cone or other structures with inclined surface. The pushing load caused by flat ice is an important technical index for the design of platform in ice area. It is of great significance to simulate the load characteristic relation of flat ice pushing structures and the accumulation patterns of crushing ice accurately. In this paper, FEM-SPH coupling algorithm and finite element method (FEM) were used to simulate the process, in which a ice cone were pushed by a flat ice, and the influence of the diameter of ice cone on the morphology of broken ice and the pushing load is analyzed. The results showed that, compared with FEM, FEM-SPH coupling algorithm can not only accurately predict the dynamic load of flat ice pushing structure, but also visually reproduce the accumulation of broken ice, which is helpful to understand and analyze the interaction law between flat ice and structure. In addition, the model and analysis conclusions about FEM-SPH coupling algorithm can provide reference for the research and design of structures in ice zone.
2022,44(10): 55-60 收稿日期：2021-05-21
DOI：10.3404/j.issn.1672-7649.2022.10.011
分类号：U656.6
基金项目：上海交通大学深蓝计划（SL2020ZD101）
作者简介：任禹陪(1997-)，男，硕士研究生，研究方向为船舶与海洋工程
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