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众所周知,机器的相对滑动部位内,油膜的隔离作用对延长机器寿命、减少噪声、减少动力消耗等方面起着重要的作用。然而由于这个问题的复杂性,使描述油膜动态刚度(抗排挤性能)时碰到很多困难。如何把问题简化,以致于得出工程中便于使用的公式和图表是个重要的课题。Fuller曾对纯液体摩擦条件下滑块之间油膜刚度和滑块下沉规律作了描述。但在工程中大量碰到的是混合摩擦,即导轨表面内除了液体抗排挤力外,在部分地区内存在接触弹性变形,因而问题变得复杂了。本文试图讨论混合摩擦导轨内油膜刚度的计算问题。
As we all know, the relative sliding parts of the machine, the oil film isolation to extend the life of the machine, reduce noise, reduce power consumption and so plays an important role. However, due to the complexity of this problem, it is difficult to describe the dynamic stiffness of the oil film (anti-squeeze performance). How to simplify the problem so that it is an important issue to come up with formulas and charts that are easy to use in the project. Fuller described the stiffness of the oil film and slider slippage between slides under pure liquid friction conditions. However, a large number of projects encountered in the mixed friction, that is, the surface of the rail in addition to liquid anti-squeezing force, there is contact elastic deformation in some areas, so the problem becomes complicated. This article attempts to discuss the calculation of the film stiffness in a hybrid friction rail.