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Shear-induced solid-fluid transition in a wet granular medium.

Michael Schulz1, Beatrix M Schulz, Stephan Herminghaus

  • 1Abteilung Theoretische Physik, Universität Ulm, D-89069 Ulm, Germany.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|June 6, 2003
PubMed
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This study numerically investigates shear-induced transitions in wet granular matter. Wet granular materials transition from solid-like to fluid-like states when external forces exceed a critical threshold, exhibiting scaling laws.

Area of Science:

  • Physics
  • Materials Science
  • Rheology

Background:

  • Wet granular matter exhibits complex behaviors influenced by liquid-induced cohesion.
  • Understanding solid-fluid transitions is crucial for various industrial and natural processes.

Purpose of the Study:

  • To numerically investigate the shear-induced solid-fluid transition in wet granular matter.
  • To analyze the dynamics and scaling laws near the phase transition.

Main Methods:

  • A numerical simulation model incorporating cohesive and repulsive forces between granules.
  • Analysis of system dynamics under an external force field exceeding a critical value.

Main Results:

  • Identified a transition from solid-like to mobile ergodic states under shear stress.

Related Experiment Videos

  • Observed characteristic scaling laws for diffusion coefficients, dissipation, and kinetic order parameters.

    • Conclusions:

    • The study provides insights into the physics governing shear-induced transitions in wet granular systems.
    • The findings contribute to the understanding of granular material rheology and phase transitions.