Characterization Of Surface Topography Of Interacting Surface And Lubrication Analysis Of Textured Surface

Surface topography has tremendous influence on the components function and the performance, the efficiency and the service life of equipment. Function oriented characterization surface topography is the basis of design and evaluation of surface topography. At present, surface characterization mainly aims at the single surface, and few at interacting surface. As any mechanical products have a "motion guarantee function", inevitably two surfaces in relative motion must be concerned, which also known as tribopair, interaction inevitably occurs between two surfaces. This paper analyzed 3D surface characterizing parameters which manifest the interaction of the surface: real contact area ratio, closed and open void area ratio, studied the change situation of surface topography in surface interaction process, and extended two key parameters--maximum closed void area ratio and closed void volume. The the detailed computational method of above parameters by using MATLB software and mathematics morphology digital image processing is given, and real surface topography and simulated surface topography are characterized.In order to further research the friction and lubrication performance of surface topography, based on theoretical lubricating models, aimed at cylinder surface with regular micro pores, the friction and lubrication performance of cylinder / piston ring system is analyzed, and the influence of surface micro geometry shape parameters is given, this work provide theoretical basis for the optimization design of microscopic geometry of tribopair surface.