A discussion on the effect of surface roughness on creep curves (IM-WRI-002)

Kalker's theory (1) for predicting friction-creep curves assumes Hertzian contact of two bodies, the surfaces of which are smooth. The contact area is sub-divided into a region in which no-slip occurs, the 'locked' region, and a slip region. If the surface roughness is of the order of 0.2 to 0.4...