基于LS-DYNA的冰材料模型二次开发及重叠冰应用  

Secondary development of ice material model based on LS-DYNAand application of overlapping ice

作　　者：张行初 冯国庆[1] 朱文博 任慧龙[1] 吴嘉蒙[2] ZHANG Xingchu;FENG Guoqing;ZHU Wenbo;REN Huilong;WU Jiameng(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001 [2]中国船舶及海洋工程设计研究院,上海200011

出　　处：《江苏科技大学学报（自然科学版）》2023年第1期9-14,共6页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(52171301)。

摘　　要：利用LS-DYNA材料库开发了一种适用于极地海冰的材料模型,该模型基于粘弹-塑性本构关系,采用Drucker-Prager模型作为海冰的屈服准则,同时可计及应变率对海冰材料失效的影响.通过圆台型冰破坏的仿真计算,验证了该材料模型的合理性;将模型用于重叠冰单轴压缩破坏的模拟,结果表明数值模拟的重叠冰破坏现象及冰载荷均与试验结果吻合良好,该模型可用于重叠冰的模拟.A material model suitable for polar sea ice is developed by using LS-DYNA material library.The model is based on the viscoelastic plastic constitutive relationship and Drucker Prager model is adopted as the yielding criterion of sea ice,and the effect of strain rate on the failure of sea ice material can be taken into account.The rationality of the material model is verified by the simulation calculation of cone ice failure;the model is further used to simulate the uniaxial compression failure of overlapping ice.The results show that the numerical simulation of overlapping ice failure phenomenon and ice load are in good agreement with the experimental results.The model can be used to simulate overlapping ice.

关 键 词：本构模型 重叠冰 LS-DYNA DP屈服准则 粘弹塑性 

分 类 号：U662.2[交通运输工程—船舶及航道工程]