尾轴承橡胶层厚度和硬度及其交互作用对摩擦性能的影响

舰船水润滑橡胶尾轴承的橡胶层在受载时极易产生弹性变形,使轴承与轴颈间水楔的 形状发生变化,影响摩擦副的摩擦性能。橡胶层变形量的主要影响因素为橡胶层的硬度及厚度。 针对这两个因素,在尾管轴承实验台架SSB-100 上进行了试块实验,测定了各种工况下的摩擦系 数,并对实验结果进行了双因素有交互作用的方差分析。结果显示:橡胶层的厚度、硬度及其交互 作用对试块摩擦性能的影响中,以橡胶层的厚度最为显著,硬度次之,厚度和硬度的交互作用再次 之。设计时应优先保证橡胶层厚度值。

Effect of Thickness and Hardness and Their Interaction of Rubber Layer of Stern Bearing on the Friction Performance

Rubber layer of ship stern tube water-lubricated rubber bearings can be easily deformed elas- tically under certain load, and can cause the change of water wedge between the bearing and the shaft journal, which affects the friction performance of the bearing system. Thickness and hardness are the main structural factors that affect the deformation of the rubber layer. To determinate the influence of these two factors and their interaction, tests were carried out on the test rig SSB-100 by test blocks, and corresponding friction coefficient were recorded. Then two-factor variance analysis with interaction was done with the experimental data. The results show that among the effect of rubber layer thickness, hard- ness and their interactions of test blocks on the friction properties, the rubber layer thickness is the most significant, followed by hardness, then the interaction of thickness and hardness. Thus, in the design, rubber layer thickness should be guaranteed as priority.