海洋平台分布式动力吸振  

Distributed Dynamic Vibration Absorption of Offshore Platforms

作　　者：王禹 缪旭弘[2,3] 王娜 李海超 庞福振[2,4] WANG Yu;MIAO Xuhong;WANG Na;LI Haichao;PANG Fuzhen(Marine Design and Research Institute of China,Shanghai 200011,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China;Chinese People's Liberation Army 92857 Troop,Beijing 100161,China;Yantai Research Institute,Harbin Engineering University,Yantai 264000,Shandong,China)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011 [2]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [3]中国人民解放军92578部队,北京100161 [4]哈尔滨工程大学烟台研究院,山东烟台264000

出　　处：《中国海洋平台》2021年第5期28-33,共6页China offshore Platform

摘　　要：针对螺旋桨激励引起的海洋平台上层建筑低频线谱振动问题,基于动力吸振理论,开展海洋平台分布式动力吸振研究。建立四自由度主从耦合动力吸振模型,分析动力吸振器吸振性能随布放位置的变化规律;研究分布式动力吸振器数量和布放方案对板架结构减振效果的影响;以某海洋平台为例,开展分布式动力吸振的应用研究,降低海洋平台上层建筑区域的振动响应。研究表明:当动力吸振器总质量不变时,吸振器布放位置对减振效果影响较大;当分布式动力吸振器质量分配合理时,其减振效果优于单点动力吸振器。Aiming at the problem of low-frequency line spectrum vibration of the superstructure of the offshore platform caused by the propeller excitation,a distributed dynamic vibration absorption study of the offshore platform is carried out based on the theory of dynamic vibration absorption.A four-degree-of-freedom master-slave coupling dynamic vibration absorption model is established,and the variation of the vibration absorption performance of the dynamic vibration absorber with the layout position is analyzed.The influence of the number and the layout scheme of the distributed dynamic vibration absorbers on the vibration reduction effect of the plate frame structure is studied.Taken an offshore platform as an example,the application research of the distributed dynamic vibration absorption is carried out to reduce the vibration response of the superstructure area of the offshore platform.The research shows that:when the total mass of the dynamic vibration absorber is unchanged,the layout of the vibration absorber is of great influence on the vibration reduction effect;when the mass distribution of the distributed dynamic vibration absorbers is reasonable,the vibration reduction effect is better than that of the single-point dynamic vibration absorber.

关 键 词：海洋平台 动力吸振 参数优化 布放方案 

分 类 号：P75[天文地球—海洋科学] O328[理学—一般力学与力学基础]