船舶后尾轴承支承刚度对轴系回旋振动影响  

Influence of Aft Stern Tube Bearing Stiffness on Whirling Vibration of Ship Shafting

作　　者：李小军[1] 朱汉华[1] 秦源 许浩然 LI Xiaojun;ZHU Hanhua;QIN Yuan;XU Haoran(School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学能源与动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2018年第2期274-277,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金重点项目资助(51139005)

摘　　要：采用ANSYS有限元软件,建立某集装箱船舶轴系有限元模型,计入螺旋桨陀螺效应,分析了后尾轴承刚度对船舶轴系回旋振动影响.结果表明,后尾轴承水平刚度和垂直刚度各向异性时,其各阶回旋振动临界转速不再是一个点,而是以各阶正逆回旋固有频率为端点的区间;在陀螺效应作用下,该区间随着转速的增大而扩大.Considering the gyroscopic effect of propeller,the finite element model of a container ship shafting was established by ANSYS finite element software,and the impact of aft stern tube bearing stiffness on shafting whirling vibration was analyzed.The results show that,when the aft stern tube bearing stiffnesses in horizontal and vertical direction are anisotropy,the critical speed of whirling vibration in each order is an interval rather than a point,whose two end points are natural frequencies of forward and backward whirling vibration.Under the influence of gyroscopic effect,the interval length rises with the increase of the rotational speed.

关 键 词：船舶轴系 回旋振动 轴承刚度 陀螺效应 ANSYS 

分 类 号：U664.21[交通运输工程—船舶及航道工程]