中国舰船研究2023，Vol.18Issue(6)：158-166,9.DOI:10.19693/j.issn.1673-3185.03074
船首结构冰致动力响应的准静态等效研究
Quasi-static equivalent study on ice induced dynamic response of bow structure
摘要
Abstract
[Objective]As polar exploration develops,hull structure designs for ice routes are no longer lim-ited to the traditional empirical formula method as more attention is paid to the actual ice load and structural response acting on the structure.The study of structural response calculation under ice load is crucial for the structural design of polar ships.[Methods]First,the finite element method is used to numerically simulate the ice load cases of a polar navigation ship,such as crushed ice,floating ice and layered ice.Considering the influence of the material strain rate,the dynamic response of the structure under ice load is calculated.Second,based on the structural response equivalence,the static transformation of the dynamic response is completed,and the concept of the dynamic static transformation coefficient is proposed.Finally,the range of the dynamic static conversion coefficient under different ice load cases is obtained.[Result]The results show that the conversion coefficient of the dynamic-static equivalent conversion of the bow structure under different ice load cases is between 1.0 and 1.4.[Conclusion]The quasi-static equivalent method of the ice-induced dynamic response of a bow structure is verified as reasonable and feasible.关键词
冰载荷/应变率/结构响应/动静转化系数Key words
ice load/strain rate/structural response/dynamic static conversion coefficient分类
交通工程引用本文复制引用
赵瑾,王燕舞,李哲,冯国庆..船首结构冰致动力响应的准静态等效研究[J].中国舰船研究,2023,18(6):158-166,9.基金项目
国家自然科学基金资助项目(52171301) （52171301）
