摘要
在极地船破冰过程中,船体--海冰之间将产生十分复杂的动力学行为。本文利用有限元数值仿真软件LS-DYNA模拟一艘极地船连续破冰过程,提出了考虑冰水耦合作用的冰载荷数值计算方法,研究了考虑海冰与海水的耦合作用对作用于船体的冰载荷量值的影响。将本文提出的数值计算方法结果与冰池模型试验数据进行了对比分析,对数值算法的合理性与准确性进行了验证。在此基础上,提出冰载荷准静态分析方法,将有限元直接计算结果与规范设计载荷对比分析,引入动力缩放系数,并将其应用到冲撞式破冰能力计算的冰载荷简化模拟方法。
The interaction between ship and seawater is a complex dynamic process,the finite element numerical software LS-DYNA is used to simulate the continuous icebreaking of a polar ship.Based on the consistency of the data from ice tank test and the numerical results of this paper,the accuracy of the ice-water coupling algorithm is validated.The quasi-static analysis method of ice load is proposed by.The direct calculation result of finite element is compared with the normative design load,the dynamic factor is introduced,and it is applied to the simplified simulation method of ice load calculation for collision ice breaking capacity.It is of guiding significance to the numerical simulation of the collision.
作者
刘东
杨征
李辉
Liu Dong;Yang Zheng;Li Hui(No.91404 UnitofPLA,Qinhuangdao 066000,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《舰船科学技术》
北大核心
2019年第19期27-31,共5页
Ship Science and Technology
关键词
冰载荷
流固耦合
动力缩放系数
简化模拟
ice load
fluid-structure interaction
dynamic factor
simplified simulation
