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对于高速、动载、径向滑动轴承的油膜压力及轴心轨迹的计算,一般沿用Hahu或Holland 的分项计算方法.将挤压油膜压力与旋转油膜压力分别计算,然后叠加.可是,对于重载轴承,油膜压力的峰值较高,轴承的弹性变形不可忽视,润滑油的粘压效应亦较突出.这时,雷诺方程将成为一个非线性微分方程,不能沿用上述方法计算.本文应用等参数有限元法,系统地提出了一个整体的计算方法,预示了动载轴承的油膜压力、轴心轨迹和最小油膜厚度.为了符合变形的真实情况,本文对轴承的变形,尤其是两端的影响,在运用半无限空间弹性体的结论时,也作了适当的修正.
For the calculation of oil film pressure and axial locus of high-speed, dynamic and radial plain bearings, the calculation method of Hahu or Holland is generally adopted. The squeeze film pressure and rotary oil film pressure are respectively calculated and then superimposed. However, Bearing, the peak pressure of the oil film is high, the elastic deformation of the bearing can not be neglected, and the sticking pressure effect of the lubricating oil is also prominent.At this time, the Reynolds equation will become a nonlinear differential equation and can not be calculated by the above method.In this paper, Finite element method, a systematic calculation method is proposed systematically, which predicts the oil film pressure, the axis locus and the minimum oil film thickness of the dynamic bearing.In order to meet the actual situation of deformation, this paper analyzes the bearing deformation, especially the influence of both ends, In the application of semi-infinite space elastomer conclusion, but also made the appropriate amendments.