脂润滑条件下表面织构对滑动表面承载性能的影响  

Effect of Surface Texture on Load Carrying Capacity of Sliding Surface Under Grease Lubrication

作　　者：于如飞[1] 陈渭[1] 

机构地区：[1]西安交通大学现代设计及转子轴承系统教育部重点实验室,陕西西安710049

出　　处：《润滑与密封》2014年第10期1-5,9,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(51175409/E050504);国家重大科技专项(2011ZX04016-031)

摘　　要：为了研究脂润滑条件下表面织构对滑动表面承载性能的影响,设计球缺形、等边三角形、椭球缺形、圆台形、等腰梯形和直角三角形等6种不同形状的表面织构,利用CFD软件分析6种表面织构在相同深度和面积占有率下的承载性能,发现等边三角形织构的承载能力最强。针对等边三角形织构,探讨织构深度、面积占有率以及摩擦副表面间隙对其承载力的影响,结果表明:在一定的织构面积占有率范围内,承载力随着面积占有率的增加而增大;在相同面积占有率的条件下,承载力随织构深度大致呈现出先减小、后增大、再减小的变化规律;摩擦副表面间隙越小,其承载力越强。In order to research the effect of surface texture on the load-carrying capacity of sliding surface under grease lubrication, six different types of surface textures with the same depth and areal occupation ratio were designed, including segment of sphere, equilateral triangle, segment of ellipsoid, cone frustum, isosceles trapezoid and right triangle, and the load-carrying capacity of the surface textures was investigated by the CFD software. It is found out that the equilateral triangle texture has the strongest load-carrying capacity. The effects of textural depth, areal occupation ratio and clearance of friction pairs on the load-carrying capacity were discussed for the equilateral triangle. The results show that the load-carrying capacity is increased with the increasing of areal occupation ratio within limits. Under the same condition of areal occupation ratio, the change rule of load-carrying capacity with textural depth is roughly： firstly decreased then increased and decreased again. The smaller theclearance of friction pairs, the greater the load-carrying capacity is.

关 键 词：脂润滑 表面织构 承载力 

分 类 号：TH117.2[机械工程—机械设计及理论]