轴承磨损对轴系横向振动固有频率的影响分析  

Analysis of Influence of Bearing Wear on Natural Frequency of Shafting Transverse Vibration

作　　者：宋晶晶[1] SONG Jingjing(School of Naval Architecture and Ocean Engineering,Bohai Marine Vocational College,Huludao 125101,China)

机构地区：[1]渤海船舶职业学院船舶与海洋工程学院,辽宁葫芦岛125101

出　　处：《新技术新工艺》2024年第7期51-57,共7页New Technology & New Process

摘　　要：轴承作为支撑船舶轴系的重要部件,轴承磨损有可能导致轴系共振、故障或完全损坏,进而影响船舶正常运行,因此有必要研究轴承磨损对轴系横向振动的影响。基于动力学方程,建立了一种轴系不均匀磨损情况下的振动计算方法,通过该方法研究了舰船轴系轴承长度、轴承末端磨损量、端部质量以及尾部支撑跨距对舰船轴系固有频率的影响。结果表明:建立的计算方法可以较为准确地计算轴系固有频率,与试验值相比误差在10%以内;随着轴承长度的增加,轴系横向振动频率增加;随着尾部支撑跨距的增加,轴系固有频率逐渐降低;同一支撑跨距下,轴系固有频率随轴系直径的增加而升高;随着轴承长度的增加,轴系固有频率随着轴承末端磨损量增加,固有频率下降变小。The bearing was an important component supporting the shafting of ships,and the bearing wear may lead to shafting resonance,failure or complete damage,thus affected the normal operation of ships.Therefore,it was necessary to study the impact of bearing wear on the lateral vibration of shafting.Based on the dynamic equation,established a shafting vibration calculation method on the condition of the uneven wear of shafting bearing surface.Through this method,it was studied that the effects of the bearing length,bearing end wear,end weight and tail support span on the natural frequency of ship shafting.The results showed that the established calculation method could accurately calculate the natural frequency of shafting,and the error was within 10%.With the increase of bearing length,the transverse vibration frequency of shafting increased.With the increase of the span of the tail support,the natural frequency of the shafting decreased gradually.Under the same support span,the natural frequency of shafting increased with the increase of shafting diameter.With the increase of bearing length,the natural frequency of shafting decreased with the increase of bearing end wear.

关 键 词：船舶轴系 等效支撑 振动计算 轴系参数 影响评估 

分 类 号：U662.2[交通运输工程—船舶及航道工程]