弹性支撑轴系的位移特性  

Displacement Characteristics of Ship Elastic Support Shafting System

作　　者：尹红升 张鲁君 曹亮 YIN Hongsheng;ZHANG Lujun;CAO Liang(Units of 91388,Zhanjiang 524000,Guangdong,China;China Coast Guard Academy,Ningbo 315800,Zhejiang,China)

机构地区：[1]91388部队,广东湛江524000 [2]中国人民武装警察部队海警学院,浙江宁波315800

出　　处：《船舶工程》2024年第6期83-88,93,共7页Ship Engineering

摘　　要：针对新型弹性支撑轴系安全性中存在的位移特性问题,提出一种基于稳健加权的最小二乘等效面法,用以综合衡量轴系弹性形变和位移。建立轴系有限元法模型,通过顶举法验证其有效性。通过耦合静力分析得到轴系及支撑结构的弹性形变规律、不同转速轴系的挠曲分布状态和弹性支撑轴系的轴承变位规律,采用阈值灵敏度分析方法得到空气弹簧承载特性关于静力输入载荷的灵敏度。结果表明:等效线面法可用于评价系统和轴承的位移特性;艉轴承位移变化中垂向位移特性的变化最大,推力轴承次之;推力会引起较大的弹性支撑结构纵垂耦合形变。研究结果可为船用大型弹性支撑结构的安全性改进设计提供参考。Aiming at the problem of displacement characteristics in the safety of the new elastic support shafting system,a robust weighted least squares equivalent surface method is proposed to comprehensively measure the elastic deformation and displacement of the shafting system,establish the finite element method model of the shafting system,and verify the model by the jacking method.The elastic deformation law of the shafting system and the supporting structure,the deflection distribution state of the shafting system at different speeds,and the displacement law of the elastic support shafting bearing were obtained through coupled static analysis,and the sensitivity of the bearing characteristics of the air spring on the static input load is obtained by the threshold sensitivity analysis method.The equivalent linear surface method can be used as an index to evaluate the displacement characteristics of the system and bearings.The vertical displacement characteristics of stern bearings change the most,followed by thrust bearings;the thrust will cause a large longitudinal coupling deformation of the elastic support structure.The analysis results and research conclusions can provide reference for the safety improvement design of marine large-scale elastic support structures,and have certain engineering application value.

关 键 词：船舶轴系 弹性支撑 位移特性 

分 类 号：U664.21[交通运输工程—船舶及航道工程]