摘要
结构在实际海况中入水受到多种载荷的共同作用,同时还伴随波浪作用的影响,因此该过程是一个强非线性的过程。针对结构在波、流中入水过程的特点,将入射波(波、流)引入非线性双渐进法,研究三维刚体圆柱体在波、流及波流联合作用下入水过程运动响应及姿态的变化,计算结果与试验结果符合得较好,非线性双渐进法适用于分析三维刚体波、流中入水问题。结果表明在近波面附近,结构受波浪作用明显,入水相位、浪级、流速及波流速度矢量差异对结构入水运动速度及轨迹影响明显。
During water entry of the structure in actual sea states, it will receive the interaction of a vari- ety of loads, as well as the influence of wave and stream action, so this is a strong non-linear process. Ac- cording to the characteristics of water entry of the structure, the incident wave and stream will be introduced to the nonlinear doubly asymptotic approximation method, so as to study the motion response and attitude change of 3D rigid cylindrical under wave and stream action during water entry. The calculation results fit with the test results well, this method is available for the analysis of water entry of 3D rigid body. The re- suits show that in the vicinity of wave surface, the wave affects the structure distinctly; phases of water en- try, wave scale, stream velocity and the differences of wave and stream velocities vector influence the speed, motion trajectory of the structure in water notably.
出处
《船舶力学》
EI
CSCD
北大核心
2015年第10期1186-1196,共11页
Journal of Ship Mechanics
基金
船舶预研支撑技术基金资助项目(13J1.5.1)
国家自然科学基金资助项目(51309060)
关键词
入水
波流
非线性
双渐进法(DAA)
water entry
wave and stream
non-linear
DAA (doubly asymptotic approximation)