A complex systems analysis of stick-slip dynamics of a laboratory fault

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • David M. Walker
  • Antoinette Tordesillas
  • Michael Small
  • Robert P. Behringer
  • Chi K. Tse

Detail(s)

Original languageEnglish
Article number013132
Journal / PublicationChaos
Volume24
Issue number1
Online published13 Mar 2014
Publication statusPublished - Mar 2014
Externally publishedYes

Abstract

We study the stick-slip behavior of a granular bed of photoelastic disks sheared by a rough slider pulled along the surface. Time series of a proxy for granular friction are examined using complex systems methods to characterize the observed stick-slip dynamics of this laboratory fault. Nonlinear surrogate time series methods show that the stick-slip behavior appears more complex than a periodic dynamics description. Phase space embedding methods show that the dynamics can be locally captured within a four to six dimensional subspace. These slider time series also provide an experimental test for recent complex network methods. Phase space networks, constructed by connecting nearby phase space points, proved useful in capturing the key features of the dynamics. In particular, network communities could be associated to slip events and the ranking of small network subgraphs exhibited a heretofore unreported ordering. (C) 2014 AIP Publishing LLC.

Research Area(s)

  • TIME-SERIES, STRESS, FLUCTUATIONS, NETWORKS, FRICTION, TRANSITIONS, MOTIFS

Citation Format(s)

A complex systems analysis of stick-slip dynamics of a laboratory fault. / Walker, David M.; Tordesillas, Antoinette; Small, Michael et al.
In: Chaos, Vol. 24, No. 1, 013132, 03.2014.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review