Abstract
The contact of random modeled one- and two-process textures with smooth, flat surfaces is discussed in this paper. An elastic-plastic contact model was applied, assuming a distributed radius of summits. A one-process surface was characterized by the standard deviations of height and the correlation length; however, it also had a two-process texture by the standard deviations of the plateau and valley structures, the material ratio at the transition point, and the correlation lengths of the plateau and valley parts. It was found that the contact characteristics depended on the height and spatial properties of the surface texture. The plateau part governs the contact characteristics of two-process surfaces, while the effect of the valley surface portion is smaller. The plastic deformation leads to a smaller effect of the surface texture on the contact characteristics.
Highlights
A correct characterization of a contact between rough surfaces is important for analyzing many tribological problems
One can see that an increase in the correlation length CL led to increases
One can see that an increase in the correlation length CL led index increased owing to the growth of the surface height
Summary
A correct characterization of a contact between rough surfaces is important for analyzing many tribological problems. The basic elastic contact model was developed by Greenwood and Williamson [1]. Elastic–plastic statistical contact models were developed on the basis of theoretical consideration [2,3]. The finite elements method (FEM) [4,5,6,7]. In these approaches, the single asperity contact models are incorporated into rough surface contact [8]. It is believed that numerical methods [9,10] are better than statistical ones for modeling the contact between rough surfaces. FEM can be used for simulating the contact between two rough surfaces [11,12]
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