海上横向补给系统多体动力学建模与仿真分析  

MULTIBODY DYNAMICS MODELING AND SIMULATION ANALYSIS OF OFFSHORE ALONGSIDE REPLENISHMENT SYSTEM

作　　者：高一鸣 马子琦 刘铸永[1] 王检耀 Gao Yiming;Ma Ziqi;Liu Zhuyong;Wang Jianyao(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai,Shanghai,200240,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《动力学与控制学报》2022年第5期34-40,共7页Journal of Dynamics and Control

基　　金：国家自然科学基金资助项目(11772188)。

摘　　要：海上横向补给是目前舰船补给的主要方式,通过接收船与发送船之间架设的恒张力高架索进行货物转运.本文利用多体动力学理论建立了海上横向补给系统的动力学模型.该系统由舰船、货物、滑轮以及高架索组成,对舰船、货物和滑轮采用刚体假设,对高架索采用几何精确梁理论进行建模.基于赫兹理论建立了滑轮与高架索之间的接触模型.为提升计算效率,针对恒张力索的特点提出了一种简化的力元模型,并通过与精确模型的对比验证了该简化模型的准确性.利用简化模型,对复杂海况下的补给作业进行了全过程动力学仿真,分析了船舶运动、补给距离、张紧力对转运过程的影响.结果表明在海况条件恶劣、补给距离长、张紧力过小时,无法保证转运过程安全作业.Currently,offshore alongside replenishment is the main mode of ship replenishment,which operates by transporting goods via constant tension highline cables erected between receive and supply vessels.In this paper,a dynamic model of offshore alongside replenishment is established based on multibody dynamics theory.The system consists of ships,cargo,pulleys and highline cable.Rigid body assumption is adopted for ships,cargo and pulleys.The highline cable is modeled using the geometrically accurate beam theory.A contact model between pulley and highline cable is established based on Hertz theory.In order to improve calculation efficiency,a simplified force element model is proposed according to characteristics of constant tension cable,and its accuracy is verified by comparison with the exact model.The dynamic simulation of whole replenishment operation under complex sea conditions is carried out by using the simplified model,and the effects of ship motion,replenishment distance and tension on the transporting process are analyzed.The results show that safe operation can not be guaranteed under harsh sea conditions,long replenishment distance or too small tension.

关 键 词：横向补给 高架索 大变形梁 多体动力学 仿真分析 

分 类 号：O313.7[理学—一般力学与力学基础]