轴段空心度对舰船复杂推进轴系回旋振动特性的影响研究  

Influence of shaft segment hollowness on the whirling vibration characteristics of ship complex propulsion shafting

作　　者：古铮 刘金林[1] 房诗雨 GU Zheng;LIU Jin-lin;FANG Shi-yu(College of Power Engineering,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学动力工程学院,武汉430033

出　　处：《船舶力学》2025年第2期312-320,共9页Journal of Ship Mechanics

基　　金：湖北省自然科学基金资助项目(2017CFB584);国防科技基金资助项目(20191C080744)。

摘　　要：现代舰船推进轴系的结构设计较为复杂,结构尺寸是影响其回旋振动特性的一项重要因素。本文以某舰船复杂推进轴系为研究对象,研究轴段空心度变化对轴系回旋振动特性的影响。基于有限元法建立轴系回旋振动分析模型,并在初始空心度下分析轴系的回旋振动特性;在此基础上,通过强度校核确定空心度的取值范围,以艉轴和螺旋桨轴空心度为变量,分析了艉部轴段空心度变化对轴系回旋振动临界转速的影响规律,并结合轴系校中的衡准要求进一步细化了空心度的取值范围。研究成果可为舰船推进轴系设计过程中的结构设计和回旋振动控制提供参考。The structural design of the propulsion shafting of modern ships is relatively complex,and the structure size is an important factor affecting the whirling vibration characteristics.Taking a ship complex propulsion shafting as the object,the influence of changes in shaft segment hollowness on the whirling vibration characteristics of the shafting was studied in this paper.Based on the finite element method,a whirling vibration analysis model of the shafting was established,and the whirling vibration characteristics of the shafting were analyzed under the initial hollowness.On this basis,the range of hollowness values was determined through strength check calculation.Taking the hollowness of the stern shaft and propeller shaft as variables,the influence of changes in the hollowness of shaft segments on the critical speed of the whirling vibration was analyzed and the values range of hollowness was specified according to the requirements of shafting alignment.The results can provide a reference for structural design and whirling vibration control in the design process of ship propulsion shafting.

关 键 词：舰船复杂推进轴系 回旋振动 轴段空心度 有限元 

分 类 号：U664.21[交通运输工程—船舶及航道工程]