初始横倾角对船舶横摇运动响应的影响  

Influence of initial heeling angle on ship roll motion response

作　　者：章泽文 娄相芽[2] 余象鹏 何林 柴威 ZHANG Zewen;LOU Xiangya;YU Xiangpeng;HE Lin;CHAI Wei(Zhejiang Branch,China Classification Society,Ningbo 315100,China;China Ship Development and Design Center,Wuhan 430064,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]中国船级社浙江分社,浙江宁波315100 [2]中国舰船研究设计中心,湖北武汉430064 [3]武汉理工大学船海与能源动力工程学院,湖北武汉430063

出　　处：《中国舰船研究》2022年第6期187-192,共6页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(52201379);中央高校基本科研业务费专项资金资助项目(3120621107,3120622898)。

摘　　要：[目的]系统地研究初始横倾角对随机横浪下船舶横摇运动响应的影响。[方法]以路径积分法为基础,通过数值求解控制横摇运动微分方程概率属性的Fokker-Planck方程,得到横摇运动响应的概率分布。[结果]结果显示,初始横倾角对船舶横摇运动响应谱的影响有限,但对横摇角概率分布以及横摇运动响应极值分布的影响十分明显,且会造成船舶安全性的显著恶化。[结论]路径积分法可作为研究随机海浪下船舶横摇运动特性的有效数值方法。[Objectives]In this work,the influence of the initial heeling angle on the roll motion response of a ship in random beam wave is studied.[Methods]Specifically,the path integration method is applied to solve the Fokker-Planck equation,which governs the probability properties of the stochastic differential equation for the roll motion.The probability distributions of the roll motion response can then be obtained.[Results]The results show that the initial heeling angle has limited influence on the roll motion response spectrum,but the probability density function of the roll motion response and distribution of extreme roll motion response can be significantly influenced by the heeling angle.As a result,the safety and stability of the ship will deteriorate dramatically.[Conclusions]The path integration method can be effective for studying the characteristics of ship roll motion under random waves.

关 键 词：初始横倾角 横摇运动 路径积分法 响应极值 

分 类 号：U661.22[交通运输工程—船舶及航道工程] U661.32[交通运输工程—船舶与海洋工程]