首先选取并验证合适的冰材料模型，通过建立冰排与破冰船有限元模型，应用非线性显式动力学软件Ls-dyna对破冰船在不同冰厚、不同船速条件下的连续式破冰过程进行数值模拟，并将不同冰况下仿真结果和经验公式计算得到的冰力值做对比研究。最后对各个经验公式中的主要参数进行敏感性分析，得出各个参数对冰阻力计算的影响差异程度，对冰阻力估算和船体结构设计具有重要参考价值。
Firstly, the appropriate ice material model was selected and verified. By establishing the relevant finite element model of level ice and icebreaker, the continuous icebreaking process of icebreaker under different ice thickness and different ship speeds was implemented by using nonlinear explicit power software Ls-dyna. The resistance of ice calculated from numerical simulation results and empirical formulas which were compared under different ice conditions. Finally, the sensitivity of the main parameters in each empirical formulation was analyzed, and the degree of difference in the impact of each parameter on the ice resistance calculation was obtained, which is of important reference value for ice resistance estimation and related hull structural design.
2019,41(8): 1-6 收稿日期：2018-07-28
DOI：10.3404/j.issn.1672-7649.2019.08.001
分类号：U661.4
基金项目：国家自然科学基金资助项目（51579121）；中国博士后科学基金面上资助项目（2017M621663）；江苏省博士后科研资助项目（1701055B）
作者简介：张健(1977-),男,博士,教授,研究方向为船舶抗冲击结构强度
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