动载轴承温度平衡和轴心轨迹计算(Ⅱ)——进油压力不为零的情况

The Calculation of the Temperature Equilibrium and the Shaft Center Trajectory for a Dynamically Loaded Journal Bearing(Ⅱ)——Nonzero Inlet Pressure

本文提出了直接计算进油压力不为零时带油槽(孔)的动载轴承的全油膜压力分布来计算其热平衡和轴心轨迹的算法。由于充分利用了雷诺方程的线性迭加原理,使油膜压力分布的计算量减小了三个数量级。实例计算及计算结果与本文的试验结果的比较表明,本方法不仅在数学原理上比较严格,物理模型上比较合理,而且计算快速稳定,通用性强,是一个能直接用于工程设计的较好算法。

Based on the direct calculation of pressure distribution of the oil filma computational method of the temperature equilibrium and shaft center tra-jectory for a dynamically loaded journal bearing with a oil groove or oilnole and nonzero inlet oil pressure was proposed.Because of making fulluse of the linear superposition principle of Reynolds equation the calcula-tion work of the pressure distributions in the oil film was reduced aboutthree orders of magnitude.The method is not only rigorous and reasonablemethematically and physically but also economical.The calculations exampleshowed that the method is a good general method which can be applied di-rectly to the parctical bearing design.