用旋转式粘度计对润滑脂进行试验研究表明:它的流动性能类似于宾汉塑性体,可用数学模型τ=τ_0+η·D描述;即剪应力由两部分组成:屈服极限和粘度效应。此外,受剪区的塑性润滑膜可以采用牛顿流体润滑膜中使用的计算方法,但需引入表观粘度η~*的概念,τ=η~*D。研究结果为正确设计及选用润滑脂、润滑脂润滑系统,特别是为脂润滑的滑动轴承的设计、计算提供了依据。 The experimental study of the grease with a rotary viscometer shows that its flow behavior is similar to that of Binham plastic body and can be described by the mathematical model τ = τ_0 + η · D; that is, the shear stress is composed of two parts: yield limit and viscosity effect. In addition, the plastic lubrication film in the shear zone can be calculated using Newtonian fluid lubrication film, but the concept of apparent viscosity η ~ * is introduced, τ = η ~ * D. The results provide the basis for the correct design and selection of grease and grease lubrication systems, especially for the design and calculation of grease lubricated plain bearings.