Report

The Dynamics of the Onset of Frictional Slip

See allHide authors and affiliations

Science  08 Oct 2010:
Vol. 330, Issue 6001, pp. 211-214
DOI: 10.1126/science.1194777

You are currently viewing the editor's summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Slip Sliding Away

The initiation of frictional motion, or slip, along ideal surfaces typically behaves as predicted by rupture models. When stress heterogeneities—similar to irregularities in fault zones in Earth's crust—are introduced, rupture propagation speeds are not as well constrained by models. To improve understanding of slip behavior, Ben-David et al. (p. 211; see the Perspective by Zapperi) measured rupture speeds and stress profiles along an extended frictional interface between two polymer blocks. The experiments revealed a slow mode of slip that occurs when the local ratio of shear to normal stress is sufficiently low. The selection and arrest of three distinct modes of rupture depended on the value of the local stress ratio.

View Full Text

Stay Connected to Science