The role of asperity indentation and ploughing in rock friction - I. Asperity creep and stick-slip

C. H. Scholz, James Terry Engelder

Research output: Contribution to journalArticle

185 Scopus citations

Abstract

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 languageEnglish (US)
Pages (from-to)149-154
Number of pages6
JournalInternational Journal of Rock Mechanics and Mining Sciences and
Volume13
Issue number5
DOIs
StatePublished - Jan 1 1976

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Engineering(all)

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