磁流变丁腈橡胶基微凹槽尾轴承润滑特性研究  

Lubrication Characteristics of Micro-Groove Stern Tube Bearing with Magnetorheological Nitrile Rubber-Based

作　　者：张圣东[1] 杨秀英 金勇[2] ZHANG Sheng-dong;YANG Xiu-ying;JIN Yong(School of Mechanical&Materials Engineering,Jiujiang University,Jiangxi Jiujiang 332005,China;School of Energy and Power Engineering,Wuhan University of Technology,Hubei Wuhan 430063,China)

机构地区：[1]九江学院机械与材料工程学院,江西九江332005 [2]武汉理工大学能源与动力工程学院,湖北武汉430063

出　　处：《机械设计与制造》2023年第4期214-218,共5页Machinery Design & Manufacture

基　　金：江西省科技厅重点研发计划一般项目(联合资助)—丁腈橡胶基纳米复合材料水润滑尾轴承的减振降噪机理研究(20192BBEL50028)。

摘　　要：提出了一种磁流变丁腈橡胶基水润滑微凹槽尾轴承。在不同磁场强度下制备磁敏橡胶试样,并获得弹性模量;利用柔度矩阵法计算了轴承变形,建立了磁流变水润滑微凹槽尾轴承流-固耦合理论模型,通过试验对计算模型的正确性和有效性进行验证;探明凹槽结构参数对无量纲承载力的影响。分析结果表明:增强磁场可提升尾轴承的润滑效果,磁场强度为0.35T时,承载力比0T时增大了1.2%,摩擦系数减小了1.0%;微凹槽深度取值范围为(30~50)μm,宽度取值500μm,可达最佳润滑效果。A nitrile rubber-based magneto-rheological water-lubricated micro-groove stem tube bearing was proposed.Magnetically sensitive rubber samples were prepared under different magnetic field intensities,and the elastic modulus was obtained;the bearing deformation was calculated by using the flexibility matrix method,and a theoretical model of electromagnetic-fluid-solid coupling for a magneto-rheological water-lubricated micro-groove stern tube bearing was established.The test verifies the correctness and effectiveness of the calculation model;the influence of the groove structure parameters on the dimensionless bearing capacity was verified.The analysis results show that when the magnetic field strength is O.35T,the bearing capacity is increased by 1.2%and the friction coefficient is reduced by 1.0%compared with 0T.The presence of the magnetic field can obtain better lubrication;meanwhile,the value of the depth of the micro groove is(30〜50)μm,width 500μm,can achieve the best lubrication effect.

关 键 词：磁流变弹性体 微凹槽 水润滑尾轴承 承载力 摩擦系数 

分 类 号：TH16[机械工程—机械制造及自动化] U664.21[交通运输工程—船舶及航道工程]