Spatiotemporal Dynamics of Frictional Systems: The Interplay of Interfacial Friction and Bulk Elasticity. Bar-Sinai, Y., Aldam, M., Spatschek, R., Brener, E. A, & Bouchbinder, E. Lubricants, 7(10):91, Multidisciplinary Digital Publishing Institute, October, 2019.
abstract   bibtex   
Frictional interfaces are abundant in natural and engineering systems, and predicting their behavior still poses challenges of prime scientific and technological importance. At the heart of these challenges lies the inherent coupling between the interfacial constitutive relation—the macroscopic friction law—and the bulk elasticity of the bodies that form the frictional interface. In this feature paper, we discuss the generic properties of a minimal macroscopic friction law and the many ways in which its coupling to bulk elasticity gives rise to rich spatiotemporal frictional dynamics. We first present the widely used rate-and-state friction constitutive framework, discuss its power and limitations, and propose extensions that are supported by experimental data. We then discuss how bulk elasticity couples different parts of the interface, and how the range and nature of this interaction are affected by the system's geometry. Finally, in light of the coupling between interfacial and bulk physics, we discuss basic phenomena in spatially extended frictional systems, including the stability of homogeneous sliding, the onset of sliding motion and a wide variety of propagating frictional modes (e.g., rupture fronts, healing fronts and slip pulses). Overall, the results presented and discussed in this feature paper highlight the inseparable roles played by interfacial and bulk physics in spatially extended frictional systems.
@ARTICLE{Bar-Sinai2019-pt,
  title     = "Spatiotemporal Dynamics of Frictional Systems: The Interplay of
               Interfacial Friction and Bulk Elasticity",
  author    = "Bar-Sinai, Yohai and Aldam, Michael and Spatschek, Robert and
               Brener, Efim A and Bouchbinder, Eran",
  abstract  = "Frictional interfaces are abundant in natural and engineering
               systems, and predicting their behavior still poses challenges of
               prime scientific and technological importance. At the heart of
               these challenges lies the inherent coupling between the
               interfacial constitutive relation---the macroscopic friction
               law---and the bulk elasticity of the bodies that form the
               frictional interface. In this feature paper, we discuss the
               generic properties of a minimal macroscopic friction law and the
               many ways in which its coupling to bulk elasticity gives rise to
               rich spatiotemporal frictional dynamics. We first present the
               widely used rate-and-state friction constitutive framework,
               discuss its power and limitations, and propose extensions that
               are supported by experimental data. We then discuss how bulk
               elasticity couples different parts of the interface, and how the
               range and nature of this interaction are affected by the
               system's geometry. Finally, in light of the coupling between
               interfacial and bulk physics, we discuss basic phenomena in
               spatially extended frictional systems, including the stability
               of homogeneous sliding, the onset of sliding motion and a wide
               variety of propagating frictional modes (e.g., rupture fronts,
               healing fronts and slip pulses). Overall, the results presented
               and discussed in this feature paper highlight the inseparable
               roles played by interfacial and bulk physics in spatially
               extended frictional systems.",
  journal   = "Lubricants",
  publisher = "Multidisciplinary Digital Publishing Institute",
  volume    =  7,
  number    =  10,
  pages     = "91",
  month     =  oct,
  year      =  2019,
  language  = "en"
}

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