船舶推进轴系弯振动力吸振器的设计参数研究  

Study on Design Parameters of a Dynamic Absorber for Reducing Bending Vibration of Ship Shafting

作　　者：杨志荣[1,2] 荣辉[1] 饶柱石[2] 于洪亮[1] 

机构地区：[1]集美大学轮机工程学院,福建省船舶与海洋工程重点实验室,福建厦门361021 [2]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《集美大学学报（自然科学版）》2017年第2期35-39,共5页Journal of Jimei University：Natural Science

基　　金：福建省自然科学基金青年创新项目(2016J05130);福建省教育厅科技项目(JA15272);集美大学李尚大基金项目

摘　　要：为了减小船舶轴系弯曲振动所引起的轴系疲劳破坏,提出一种并联安装在推进轴系上的动力吸振器。首先采取解析方法对轴系弯振的固有频率和模态进行分析,其次运用模态综合法建立了安装动力吸振器的船舶轴系的动力学模型,求解出船舶轴系弯曲振动的运动响应放大系数,并讨论了设计参数对主振系统的振动影响特性。该研究可为动力吸振器的结构设计提供参考。To reduce the futigue failure of ship shafting caused by the bending vibration, the design of a dynamic absorber connected to ship shafting in parallel is introduced in this paper. Firstly, the natural fre-quencies and modal shapes of the propeller shaft were calculated by using analytic method. Secondly, the ship shafting - dynamic absorber mechanical system was set up by using the modal interception and synthesis method. Finally, the motion response coefficient of the master vibration system was provided and the parame-ter influenced characteristics of dynamic absorber were discussed. The results give as reference to design a dy-namic absorber for reducing the bending vibration of ship shafting.

关 键 词：船舶 轴系 弯曲振动 动力吸振器 模态综合法 振动特性 

分 类 号：U661.44[交通运输工程—船舶及航道工程]