中文摘要：

为了研究表面形貌对线接触弹流状态下摩擦副摩擦特性的影响,采用激光微造型技术,通过控制微造型的形状、深度、间距和面积占有率等参数制造了两组表面高度算术平均值Sa分别相同的试件.使用Talysurf CCI Lite非接触式三维光学轮廓仪对表面进行测量,采用ISO25178参数及连通性系数Us对测量表面进行表征,最后在JPM-1型双盘摩擦磨损试验机上对试件进行富油摩擦试验,得到不同转速、不同载荷工况下的摩擦系数.结果表明：线接触状态下,微造型形状、方向及深度均会对表面的摩擦特性产生影响,顺向箭头微造型表面表现出了最优的摩擦特性;试件摩擦系数随着转速的增大呈线性增长趋势,随着载荷的增大而减小,减小的幅度随载荷的增大逐渐变得缓慢;表面形貌三维表征参数Ssk、Sku、Vvv、Vvc、Us与摩擦特性均有一定的关联性.

英文摘要：

In order to study the effect of surface topography on the frictional characteristics of friction pair under line contact elasto-hydrodynamic condition,by controlling the shape,depth,space and area density of micro texturing,two groups of specimens with the same surface arithmetic average height Sa were designed and manufactured by laser surface texturing.All the surfaces were measured by non-contact 3D optical profiler Talysurf CCI Lite and characterized by ISO25178 and connectivity coefficient.A series of rich oil frictional experiments were conducted on a JPM-1 two-disc tribo-tester and the friction coefficient under different load and different rotational speed conditions were measured.The results show that micro texturing,s shape,direction and depth have significant impacts on frictional characteristics in line contact.Forward arrow texturing showed the best frictional performance and friction coefficient showed a linear growth trend with the increase of the linear speed,and decreased with the increase of load.Three-dimensional characterization parameters of the surface morphology Ssk、Sku、Vvv、Vvc、Us had certain relevance with frictional characteristics.