The dynamics of the onset of frictional slip

Oded Ben-David, Gil Cohen, Jay Fineberg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

242 Scopus citations

Abstract

The way in which a frictional interface fails is critical to our fundamental understanding of failure processes in fields ranging from engineering to the study of earthquakes. Frictional motion is initiated by rupture fronts that propagate within the thin interface that separates two sheared bodies. By measuring the shear and normal stresses along the interface, together with the subsequent rapid real-contact-area dynamics, we find that the ratio of shear stress to normal stress can locally far exceed the static-friction coefficient without precipitating slip. Moreover, different modes of rupture selected by the system correspond to distinct regimes of the local stress ratio. These results indicate the key role of nonuniformity to frictional stability and dynamics with implications for the prediction, selection, and arrest of different modes of earthquakes.

Original languageAmerican English
Pages (from-to)211-214
Number of pages4
JournalScience
Volume330
Issue number6001
DOIs
StatePublished - 8 Oct 2010

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