本文按液体动压润滑理论,在液体动压滑动轴承设计基础上,为了确保滑动轴承在液体动压润滑状态下工作具有足够的可靠性,考虑到由于制造误差和工作条件的不稳定,使一些参数为随机变量,并视为正态分布规律。液体动压润滑状态的设计准则是H_1-K_1≥0。H为油膜厚度,K_1为表面粗糙度等组成的总厚度。取H与K_1为正态随机变量函数。根据干涉理论,求得液体动压润滑状态的可靠度。 Based on the theory of liquid dynamic pressure lubrication, based on the design of liquid dynamic pressure sliding bearing, in order to ensure the reliability of the sliding bearing working under hydrodynamic lubrication, it is considered that due to the manufacturing error and instability of working conditions, some The parameters are random variables and are regarded as normal distribution law. The design criterion of hydrodynamic lubrication state is H_1-K_1≥0. H is the film thickness, K_1 is the total thickness of the surface roughness and other components. Take H and K_1 as normal random variable functions. According to the interference theory, the reliability of hydrodynamic lubrication state is obtained.