Dynamic contact analysis on the level of surface asperities is a powerful means to study the wear behavior of surface and\nthe physical contact properties of interface. This article established an analytical model of asperity contacts between\nnominal rough planes during sliding process based on the statistical contact analysis of rough surfaces. The analytical\nexpression describes the mathematical relationship between the total number of asperity contacts and its main influencing\nfactors including the nominal contact area, sliding distance, the spacing between two contact planes, and surface\ntopographical parameters. A simulation model of dynamic contact of asperities on rough planes was established to rapidly\ncalculate the number of asperity contacts during the sliding process. The comparison between the calculation results\nand simulation results of the number of asperity contacts obtained through multifactor and multilevel analysis verified\nthe rationality of the analytical model.
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