中国舰船研究2025，Vol.20Issue(2)：214-226,13.DOI:10.19693/j.issn.1673-3185.03500
基于内外场匹配法的20 000TEU集装箱船非线性波浪载荷研究
Analysis on nonlinear wave loads of a 20 000 TEU container ship based on IORM
摘要
Abstract
[Objective]The aim of this paper is to study the influence of wave height on nonlinear wave loads on ships.[Methods]A 20 000 TEU container ship is selected as the research object.First,numerical research on ship wave loads under different wave heights is carried out.Based on the rigid body theory,the three-dimensional boundary element method and inner and outer region matching method(IORM)are adop-ted to calculate the velocity potential and wave excitation forces,and convergence analysis of the free surface range and grid division is also performed.Furthermore,the nonlinear factors of wave excitation force caused by the wetted surface and the hydrostatic restoring force are considered.A three-dimensional nonlinear time-domain method is employed to analyze the effects of these nonlinear factors on ship motion and wave loads under different wave heights.[Results]The results show that the nonlinearity of wave loads on the ship's sectional profile is more pronounced than that of ship motion,and the ship's second-harmonic response in-creases with wave height.[Conclusions]The second-harmonic phenomenon of nonlinear wave loads is mainly caused by the interaction of the nonlinear wave excitation force due to the changing wetted surface and the hydrostatic restoring force.This phenomenon significantly affects the magnitude of wave loads,the num-ber of load cycles,and structural fatigue damage.Therefore,it is necessary to consider the second-harmonic response components of ship loads in the engineering design stage to enhance ship safety.关键词
集装箱船/动态响应/运动响应/波浪载荷/非线性/水弹性/时域分析/内外场匹配法Key words
container ships/dynamic response/motion response/wave loads/nonlinear/hydroelasti-city/time domain analysis/inner and outer region matching method分类
交通工程引用本文复制引用
蒙经淼,杨鹏,李金成,刘敬喜..基于内外场匹配法的20 000TEU集装箱船非线性波浪载荷研究[J].中国舰船研究,2025,20(2):214-226,13.基金项目
国家自然科学基金资助项目(12372240) （12372240）
国家重点研发计划可再生能源技术专项资助项目(2022YFB4201502) （2022YFB4201502）
