艇体弹性耦合边界条件下轴系纵振反共振隔振分析  

Anti-resonance vibration isolation analysis of shafting longitudinal vibration under elastic coupling of hull

作　　者：游晶越 赵耀[1] 张赣波[1] 储炜[1] YOU Jingyue;ZHAO Yao;ZHANG Ganbo;CHU Wei(School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学船舶与海洋工程学院,湖北武汉430074

出　　处：《中国舰船研究》2020年第6期137-142,共6页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51479078)。

摘　　要：[目的]针对共振转换器(RC),研究其在轴系刚性边界条件下的结构参数设计以及在艇体弹性耦合边界条件下的应用问题,分析边界条件变化对共振转换器参数设计及其减振效果的影响。[方法]在考虑轴系转子特征的情况下,建立含有共振转换器的轴系-艇体耦合系统动力学模型;基于传递矩阵法,分析系统的振动特性和力传递特性;按照轴系刚性边界条件下的纵向振动特性进行共振转换器结构参数设计,并将其应用到艇体上。[结果]分析结果验证了上述参数设计和应用方案的可行性;共振转换器的反共振隔振机制对系统的影响可分为刚度区、反共振区和质量区;通过灵敏度分析得出了共振转换器的结构参数具有可调性。[结论]研究成果可为共振转换器从轴系试验台架性能测试走向实船应用提供借鉴和参考。[Objectives]The resonance changer(RC) is designed under rigid boundary condition and then applied to the elastic coupling boundary condition. This paper explores the influence of changes in boundary conditions on RC parameter design and its vibration reduction effect.[Methods]Considering the characteristics of the shafting rotor, a dynamic model of a shafting-hull coupling system with a RC is established. Based on the transfer matrix method, the vibration and force transfer characteristics of the system are analyzed. The structural parameters of the RC are designed according to the shafting longitudinal vibration characteristics under rigid boundary conditions, then applied to the hull.[ Results] The results show the feasibility of the above parameter design and application scheme. The influence of the anti-resonance vibration isolation mechanism on the system can be divided into the stiffness region, anti-resonance region and mass region. Through sensitivity analysis, it is proposed that the structural parameters of the RC are adjustable.[Conclusions] The results of this study can provide valuable references for the application of RC to full-sized ships.

关 键 词：共振转换器 弹性边界 反共振隔振 传递矩阵法 

分 类 号：U664.21[交通运输工程—船舶及航道工程]