摘要
在工作载荷和船体变形的共同影响下,船舶尾轴承发生变形并改变了轴承与螺旋桨轴之间的相对位置关系,导致螺旋桨轴轴颈中线与轴承中线之间形成一个变形夹角,这个夹角影响轴承润滑油膜的压力分布和刚度系数.通过对润滑油膜刚度系数的数值计算,分析了轴线间夹角对油膜刚度的影响关系.从计算结果可以得到:随着夹角的增大,油膜刚度kxx,kyy和kxy会增大,而交叉刚度kyx减小,同时夹角只能在一定的角度范围内对油膜刚度产生影响.
The stern bearing may deform because of the shipping load and ship structure deformation. It results in an angle between the axis lines of shaft and journal bearing. The angle affects the pressure distribution and dynamic stiffness coefficients of lubricating oil film. The relationship between the angle and the film stiffness coefficients is analyzed in this paper by means of numerical algorithm. It is concluded that when the angle increases, the stiffness coefficients kxx and kyy increase, the cross direction stiffness coefficient kxy also increases but kyx decreases. Furthermore, only between certain angles the influence of the angle on the stiffness coefficient of lubricating oil film exists.
出处
《武汉理工大学学报（交通科学与工程版）》
2006年第2期224-227,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目(批准号:50479016)
武汉理工大学青年基金项目资助(批准号:2003XJJ127)
关键词
轴承变形
润滑油膜
油膜刚度
数值计算
deformation of journal bearing
lubricating oil film
stiffness coefficient
numerical computation
