拖曳系统中瑞利阻尼系数变化在回转过程中对拖缆动力学振动响应的影响  

Influence of changes of Rayleigh damping coefficient on dynamic vibration response of towed cable during rotation process in towed system

作　　者：张大朋 严谨[1] 赵博文[2] 朱克强[3] 白勇[4] ZHANG Dapeng;YAN Jin;ZHAO Bowen;ZHU Keqiang;BAI Yong(Ship and Maritime College,Guangdong Ocean University,524088 Zhanjiang,China;Ocean College,Zhejiang University,316021 Zhoushan,China;Faculty of Maritime and Transportation,Ningbo University,315211 Ningbo,China;College of Civil Engineering and Architecture,Zhejiang University,310058 Hangzhou,China)

机构地区：[1]广东海洋大学船舶与海运学院,湛江524088 [2]浙江大学海洋学院,舟山316021 [3]宁波大学海运学院,宁波315211 [4]浙江大学建工学院,杭州310058

出　　处：《应用力学学报》2024年第1期106-114,共9页Chinese Journal of Applied Mechanics

基　　金：广东省促进经济高质量发展专项资助项目(No.粤融办函[2020]161);广东省促进经济高质量发展专项资金(海洋经济发展)项目(No.GDARC[2021]56)。

摘　　要：海洋拖曳系统是典型的刚柔多体系统。需要指出的是,到目前为止,绝大多数的关于海洋拖曳缆体系统的动力学问题研究都没有非常充分地考虑到阻尼的作用。但在海洋拖曳系统的结构动力学分析中,特别是拖缆回转过程中的动态响应分析中,阻尼的作用是不可忽略的。且由于阻尼的存在,拖缆的模态特性也会呈现出高度的复杂性。为探究瑞利阻尼在拖缆回转过程中的影响,基于凝集质量法对瑞利阻尼的在拖缆系统中的表达形式进行了进一步的整理与分解,并对各个阻尼分量的影响进行了归纳总结,得到了一些较为通用性的结论,对于实际海上拖曳作业有一定的指导意义。The marine towed system is a typical rigid-flexible multi-body system.It should be pointed out that up to now,the damping effect on dynamics of marine towed cable system has not been fully considered in most of the studies.However,in the structural dynamic analysis of marine towed system,especially in the dynamic response analysis of towed cable rotation process,the damping effect cannot be ignored.The modal characteristics of the cables are also highly complex due to damping.In order to study the influence of Rayleigh damping on the rotation process of towed cable,with the basis of the lumped mass method,the expression form of Rayleigh damping in towed cable system is further sorted and decomposed,and the influence of each damping component is summarized.Some general conclusions are obtained,which have certain guiding significance for actual towing operation at sea.

关 键 词：海洋拖曳系统 拖缆 瑞利阻尼 动力学 凝集质量法 

分 类 号：TV131.2[水利工程—水力学及河流动力学]