The study of anisotropic rough surfaces contact considering lateral contact and interaction between asperities

Interfacial performances are dissimilar due to the different surface topographies and materials. The aim of this paper is to study the effect of the surface topography on the contact force, contact area and contact stiffness. The distributions of the contact azimuthal angles and the contact angles were introduced in the model to build an anisotropic interface model, which includes the asperity lateral contact and the interaction. The simulation results indicate that the normal contact force, real contact area and contact stiffness decrease with the increasing separation. The standard deviations of asperity heights and asperity contact angles have significant influences on the contact of rough surfaces, while the interfacial anisotropy does not influence the contact performances in the normal direction.