【摘要】 利用应力偶理论计算了薄膜润滑的膜厚特性.计算结果表明:应力偶的作用相当于增加润滑剂粘度,其可以增加油膜厚度,提高承载能力;同时应力偶作用依赖于油膜尺寸,润滑油膜越低,其影响越明显.更多还原

【Abstract】 The lubrication characteristics of thin film lubrication are analyzed by making use of couple stress theory. Computer simulation is carried out to investigate the relationship among the minimum film thickness and the operator parameters (velocity, load, viscosity etc). The simulation results reveal that the effect of the couple stress is equivalent to enhancing the lubricant viscosity, subsequently the film thickness is enlarged and hence the load carrying capacity increased. The effect of the couple stress in thin film lubrication depends on the film size. Namely, the thinner the lubricating film is, the more obvious the effect of the couple stress is.更多还原