Papers by Keyword: Contact Characteristics

Abstract: The contact of a rigid rough surface and an elastic layered half-space which consists of coating with thickness δ₁ and the substrate. To determine the dependence of the relative contact area on dimensionless the force elastic geometrical parameter , the discrete roughness model presented by microasperities in the form of equal spherical segments with the height distribution corresponding to the bearing profile curve of the real surface is used. By using the stiffness model of layered half-space, the elastic characteristics for every each contacting asperity are determined. The system of transcendental equations which allow to determine the dependence of the relative contact areaη₁ in case of contact through coating layer on the roughness parameters, material properties, coating thickness and applied load is given. The mutual influence of the microasperities is taken into account.

Abstract: In order to analyze mechanism of pneumatic tire rollers compacting against hot asphalt pavement, taking the process of wide base tire of rollers compacting against hot asphalt pavement as research object, the wide base tire is loaded up with inflation pressure and axial force to study the contact characteristics. Two finite element contact models are established by ANSYS, one of which is for the contact of wide base tire against rigid pavement, and the other is for the contact of wide base tire against hot asphalt pavement. The static contact characteristics of wide base tire against hot asphalt pavement are achieved though FEA method, including whole deformation of tire, formation variation of contact patch, and stress distribution of contact area.