深海钻井船大开口阶梯形月池水体的非线性共振特性研究  

Nonlinear resonance characteristics of a rectangular moonpool with stairways in a deep sea drilling ship

作　　者：石城 吕海宁[1,2] 杨建民 SHI Cheng;LYU Hai-ning;YANG Jian-min(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《船舶力学》2021年第3期311-320,共10页Journal of Ship Mechanics

基　　金：国家重点研发计划项目(2016YFC0303604);工信部专项经费资助(【2016】546号)。

摘　　要：为了避免月池内部水体与外界波浪共振引发的危害,本文采用数值模拟与模型试验结合的方法,在特定频率下对矩形大长宽比月池内部水体爬升进行探究。分析了船体不同自由度运动(船体静止、船体仅有垂荡运动、船体有垂荡和纵摇运动)对月池内自由液面爬升的影响。结果表明,船体具有垂荡及纵摇两个自由度时,月池边界处波浪爬升幅值远高于船体仅有垂荡自由度的情况。分别采用不同幅值的规则波进行数值模拟,结果表明波浪幅值线性增加时,月池内自由液面爬升幅值不会线性增加,而是增量下降。The water elevations inside a moonpool under resonant circumstances were investigated through numerical simulation method and model experiments to avoid the resonance between the water inside the moonpool and the outside waves.The effects of ship motions in different degrees of freedom(static,heaving,pitching and heaving)on the water elevation inside the moonpool were analyzed.The water elevations inside the moonpool at different outside wave heights were compared.It is concluded that,when the ship is in pitch⁃ing and heaving motions,the wave elevation inside the moonpool has a far greater increase than that when the ship is only in heaving motions,and that the elevation amplitude increment of the water inside the moonpool decreases when the wave height of the outside water increases linearly.

关 键 词：阶梯形月池 液面爬升 非线性共振 活塞运动 晃荡运动 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]