海上船舶航行中的冲击模型及参数研究

Research on impact model and parameters of marine ship

为研究船身结构在冲击载荷作用下的力学行为,本文首先建立了船舶冲击力学模型,并与有限元法相结合对船身冲击残余变形进行数值分析。计算结果表明:船身冲击速度越大,船身冲击过后的残余变形也越大,越不利于结构的弹性恢复。根据船身冲击残余变形拟合得出不同冲击速度工况下船身残余变形的时间历程曲线,可为工程实践提供参考。

In order to study the mechanical behavior of hull structure under impact loading. In this paper,we first establish the ship impact mechanics model,and with the finite element method,the residual deformation of the hull structure are then studied. Calculation results show that: the residual deformation will be bigger under a higher velocity,this will be harmful to the elastic recovery. According to the hull impact residual deformation a approach model of the residual deformation under different impact velocity are then obtained. This can provide a reference for engineering practice.