船舶试验典型振动问题的控制方法  

The Control Methods for the Typical Vibration Problems in Ship Trial

作　　者：付佳 徐智言 盛利贤 FU Jia;XU Zhiyan;SHENG Lixian(Shanghai Waigaoqiao Shipbuilding Co. Ltd., Shanghai 200137, China)

机构地区：[1]上海外高桥造船有限公司,上海200137

出　　处：《噪声与振动控制》2018年第A01期278-282,共5页Noise and Vibration Control

摘　　要：由于某超大型液化气船在船舶试航期间出现明显振动问题,为了保证船舶顺利交付,急需在有限时间内提出经济有效的振动控制方案。通过应用有限元软件对局部振动结构进行模态分析,将计算结果与激励频率范围进行对比,并结合试航试验结果,找出引起局部振动的主要激励源。采用避开结构固有频率的方法,结合修改时间与优化成本,最终提出经济有效的结构优化方案。通过再次试航试验,结果表明修改后的结构振动响应有显著减少,验证了优化方案的有效性。There are some vibration problems of the very large liquefied petroleum gas carrier during the sea trials. In order to ensure the delivery of ship, an economical and effective plan for vibration control is needed to be presented urgently.In this paper, the finite element method is used to analyze the mode of local vibration. Comparing the calculated results with the range of excitation frequency and the data of ship trial, the main excitation source that causes the local vibration are found. By using the method of avoiding the natural frequency of the structure as well as considering the modification time and optimal cost, the economical and effective plans are presented. In the second ship trial, the results show that the vibration response is reduced obviously after modification and the feasibility of this plan is verified.

关 键 词：振动与波 船舶振动 模态分析 振动控制 实船试验 

分 类 号：U661.44[交通运输工程—船舶及航道工程]