考虑附水质量的吊舱推进器谐响应分析  

Harmonic Response Analysis of Pod Thruster Considering Attached Water Mass

作　　者：魏建行 高晓敏 田忠殿 王海霖 郑安宾 WEI Jianxing;GAO Xiaomin;TIAN Zhongdian;WANG Hailin;ZHENG Anbin(Shanghai Marine Equipment Research Institute,Shanghai 200031,China)

机构地区：[1]上海船舶设备研究所,上海200031

出　　处：《船舶工程》2025年第2期73-81,155,共10页Ship Engineering

摘　　要：[目的]探讨吊舱推进器水下运行时水动力载荷对其安全性能的影响。[方法]在对吊舱推进器三维模型进行合理简化的基础上,采用有限元分析软件ANSYS Workbench进行吊舱推进器的模态分析;在获得水下作业吊舱推进器的固有频率和相关振型后,进行谐响应分析。[结果]结果表明:吊舱推进器前5阶模态为整体模态,整个系统发生弯曲和扭转等变形;从第6阶模态(25.6 Hz)开始,螺旋桨产生局部模态,螺旋桨叶片发生弯曲和扭转等局部变形。不同部件发生共振的频率分别为5.8 Hz、6.3 Hz和9.9 Hz。[结论]吊舱推进器在实际运行中应避免在这3个共振频率下停留,以防发生共振,这为吊舱推进器整机性能的预测与优化提供了依据。[Purpose]The purpose of this study is to investigate the impact of hydrodynamic loads on the safety performance of a podded propulsor during underwater operation.[Method]The method involves simplifying the 3D model of the podded propulsor and performing modal analysis using the finite element analysis software ANSYS Workbench.After obtaining the natural frequencies and corresponding vibration modes of the podded propulsor during underwater operation,a harmonic response analysis is conducted.[Result]The results indicate that the first five modes of the podded propulsor are global modes,where the entire system undergoes bending,twisting,and other deformations.Starting from the sixth mode(25.6 Hz),the propeller generates local modes,with the propeller blades experiencing bending,twisting,and other local deformations.The resonance frequencies of different components are 5.8 Hz,6.3 Hz,and 9.9 Hz,respectively.[Conclusion]The conclusion is that the podded propulsor should avoid staying at these three resonance frequencies during actual operation to prevent resonance,providing a basis for the prediction and optimization of the overall performance of the podded propulsor.

关 键 词：吊舱推进器 模态分析 谐响应分析 

分 类 号：U671.99[交通运输工程—船舶及航道工程]