Two processes which produce the stick-slip instability in the frictional slliding of rock have been identified. These are: (1) fracture of asperities at the onset of sliding, and (2) creep at the sliding surface leading to a progressive increase in real area of contact with time. The second process produces an increase in friction with increased time of stationary contact or decreased sliding velocity, and results from stress corrosion cracking and/or hydrolytic weakening. The Bowden and Tabor adhesion theory, when modified to include asperity creep, adequately predicts the frictional behavior of rock when brittle fracture of asperities is inhibited.
|Original language||English (US)|
|Number of pages||6|
|Journal||International Journal of Rock Mechanics and Mining Sciences and|
|State||Published - May 1976|
All Science Journal Classification (ASJC) codes
- Geotechnical Engineering and Engineering Geology