Calculation of the Actual Contact Area between a Single Microasperity and the Smooth Surface of a Part when the Hardnesses of their Materials are Similar

摘要

The paper presents the dependences for determination of the interface, the radius of curvature of the loaded contact surface, and the actual contact area between a single microasperity and a part for different relationships between the hardnesses of their materials. To the previously used regularities of the indentation or flattening of a microasperity in contact with a counterbody, we add the case where the microasperity is flattened and simultaneously indented into the surface of the counterbody. This case is typical for the situation where a spherical indenter and flat counterbody of similar hardnesses contact. The experimental data corroborate the generalized analytical dependence for determination of the actual contact area.