基于FEM/SPH耦合方法的不同冰级船舶冰阻力预报  

Ice Resistance Prediction for Vessels of Different Ice-classes based on FEM/SPH Coupling Method

作　　者：王志鹏[1] 赵桥生[1] 雷建奇 季少鹏[1] WANG Zhipeng;ZHAO Qiaosheng;LEI Jianqi;JI Shaopeng(China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶与海洋工程》2025年第2期1-6,共6页Naval Architecture and Ocean Engineering

基　　金：国家自然科学基金(52192694)。

摘　　要：为准确预报船舶在不同厚度海冰下的阻力性能,基于FEM/SPH(Finite Element Method/Smoothed Particle Hydrodynamics)耦合方法开展不同冰级船舶冰阻力预报研究。采用线弹性与非线性软化相结合的方式构建黏聚单元损伤模型,以冰层厚度为基础尺寸建立海冰数值模型,通过弯曲强度测试标定相应的力学参数。同时,考虑船舶破冰过程中海水的影响,分别选择低冰级、中冰级和高冰级极地船舶开展破冰过程数值模拟并预报船舶冰阻力。将冰阻力数值计算结果与模型试验结果相对比,结果表明二者的最大偏差不超过12%,证明该数值预报方法可行。In order to accurately predict the resistance performance of ships under different thicknesses of sea ice,the study on ice resistance prediction of ships of different ice-classes is conducted based on the FEM/SPH(Finite Element Method/Smoothed Particle Hydrodynamics)coupling method.A new cohesive unit damage model is constructed by combining linear elasticity and nonlinear softening.A numerical model of sea ice is established based on the thickness of the ice layer,and the corresponding mechanical parameters are calibrated through bending strength testing.At the same time,considering the influence of seawater during the icebreaking process of ships,three polar ships of low,medium,and high ice levels are selected to conduct numerical simulations of the icebreaking process and predict the ship's ice resistance.The comparison between the numerical calculation results of ice resistance and the model test results shows that the maximum deviation between the two does not exceed 12%,proving the feasibility of the numerical prediction method.

关 键 词：有限元 海冰数值模型 冰阻力 数值模拟 

分 类 号：U661.1[交通运输工程—船舶及航道工程]