网架箱体浮筏-艇体耦合特性及全频段隔振效果分析  

Analysis on coupling characteristics of truss box floating raft-submarine hull and vibration isolation effect in full-frequency range

作　　者：吕成刚 王壮[2,3] 李晓彬 陈威[4] LYU Chenggang;WANG Zhuang;LI Xiaobin;CHEN Wei(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;China Ship Development and Design Center,Wuhan 430064,China;National key Laboratory on Ship Vibration and Noise,Wuhan 430064,China;School of Science,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,湖北武汉430063 [2]中国舰船研究设计中心,湖北武汉430064 [3]船舶振动噪声重点实验室,湖北武汉430064 [4]武汉理工大学理学院,湖北武汉430063

出　　处：《中国舰船研究》2022年第2期173-182,共10页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51979213)。

摘　　要：[目的]旨在研究网架箱体浮筏与潜艇艇体之间的耦合关系,以提出增强此耦合系统隔振效果的设计方法。[方法]首先,分别对耦合系统和独立的浮筏及艇体结构进行模态分析,比较耦合系统中的浮筏结构与独立浮筏结构、以及艇体结构与独立艇体结构的模态振型;然后,研究浮筏面板板厚和隔振器刚度对所提耦合系统全频段隔振效果的影响。[结果]结果表明,耦合系统中的浮筏与独立的浮筏相比,两者的固有频率、振型和隔振效果均相差不大;增大面板厚度和减小下层隔振器刚度都能够提高耦合系统的隔振能力。[结论]研究结果说明,在此耦合系统结构中,浮筏与艇体相互影响较小,是一种弱耦合关系。[Objectives]This paper aims to study the coupling interaction between a truss box floating raft and submarine hull,and proposes a design approach for enhancing the vibration isolation effect of the truss box floating raft-hull coupling system.[Methods]First,modal analyses of the aforementioned coupling system and individual floating raft and hull structures are carried out respectively,and comparisons are made of the modal shapes between the floating raft of the coupling system and individual floating raft structure,as well as between the hull structure of the coupling system and individual hull structure.The effects of the thickness of the floating raft panel and isolator stiffness on the isolation of the coupling system in the full-frequency range are then investigated.[Results]The floating raft of the coupling system shows little difference in natural frequency or modal shape compared with the individual floating raft,and the vibration isolation effects are also the same.In addition,the increase in the thickness of the panel and the weakening of the stiffness of the lower vibration isolator will improve the vibration isolation capability of the coupling system.[Conclusions]The results of this study indicate that the mutual influence between the floating raft and hull is small,and can be considered a weak coupling relationship.

关 键 词：网架箱体浮筏 耦合特性 模态分析 统计能量方法 全频段隔振效果 

分 类 号：U661.44[交通运输工程—船舶及航道工程]