摘要
为研究船舶碰撞浮式防波堤系泊系统的动力特性,将碰撞载荷简化为不同形式的冲击载荷,基于三维浮体间接时域分析理论和逆傅里叶变换法计算碰撞载荷作用下防波堤的水动力,利用三成分复合锚链的准静态模型分析系泊系统的张力特性,利用龙格-库塔法求解碰撞载荷作用下防波堤与系泊系统的耦合动力。研究发现:当相等冲量、不同形式的冲击载荷冲击防波堤时,运动响应大致相同;防波堤上P_(1)~P_(7)受到冲击时的运动响应和系泊冲击张力大于C_(1)~C_(3)受到冲击时的运动响应和冲击张力;当以不同角度冲击防波堤重心时,正面冲击的影响最大;改变拖地长度能增强防波堤的抗冲击能力。研究成果可供后续抗冲击浮式防波堤研究参考。
To study the dynamic characteristics of a floating breakwater mooring system in ship collision,the collision load is simplified to different forms of impact load,and the hydrodynamics of the breakwater under the collision load is calculated based on the three-dimensional floating body indirect time domain analysis theory and the inverse Fourier transform method,and the quasi-static model of the three-component composite anchor chain is used to analyze the mooring system.Tension characteristics,the coupling dynamic solution of breakwater and mooring system under collision load is realized by Runge-Kutta method.The study found that when different forms of shock loads with equal impulse impact the breakwater,the motion responses are roughly the same.The motion response and mooring shock tension of P_(1)~P_(7)on the breakwater are larger than those of C_(1)~C_(3)when it is impacted.When impacting the center of gravity of the breakwater at different angles,the impact of a frontal impact is the greatest.Changing the mop length can increase the impact resistance of the breakwater.The research results can provide a reference for subsequent research on impact-resistant floating breakwaters.
作者
王程
张火明
陆萍蓝
管卫兵
WANG Cheng;ZHANG Huoming;LU Pinglan;GUAN Weibing(China Jiliang University,Zhejiang Provincial Key Laboratory of Flow Measurement Technology,Hangzhou 310018,China;China Jiliang University,Engineering Training Center,Hangzhou 310018,China;Second Institute of Oceanography,Hangzhou 310012,China)
出处
《船舶工程》
CSCD
北大核心
2023年第3期51-59,111,共10页
Ship Engineering
基金
浙江省自然科学基金(LY19E090004)
卫星海洋环境动力学国家重点实验室开放基金(SOED1706)。
关键词
碰撞载荷
浮式防波堤
冲击张力
间接时域法
锚链准静态模型
collision load
floating breakwater
impact tension
indirect time domain method
quasi-static model ofanchorchain
