Statistics of microscopic yielding in sheared aqueous foams
arXiv:cond-mat/0608286 · doi:10.1080/09500830601166982
Abstract
We detail the statistical distribution of bubble rearrangements in a sheared two-dimensional foam. Such rearrangements, known as T1 events, are vital to mechanisms resulting in flow through microscopic mechanical yielding. We find that at a constant rate of shear, the rate of occurrence of T1 events shows only small fluctuations. This rate is however seen to vary significantly with a variation in the initial configuration of bubbles constituting the foam. In addition, we detail the spatial and orientational distribution of T1 events and relate them to the distribution of stresses in the bulk of the material. Some insights into the irreversibility of the dynamics are also discussed.
References in corpus (10)
- Dynamics of Viscoplastic Deformation in Amorphous Solids
- Rheology of Soft Glassy Materials
- Rheological constitutive equation for model of soft glassy materials
- Subextensive Scaling in the Athermal, Quasistatic Limit of Amorphous Matter in Plastic Shear Flow
- Statistics of Bubble Rearrangements in a Slowly Sheared Two-dimensional Foam
- Impact of boundaries on velocity profiles in bubble rafts
- Nonlinear Stress Fluctuation Dynamics of Sheared Disordered Wet Foam
- Slow viscoelastic relaxation and aging in aqueous foam
- Bubble kinematics in a sheared foam
- A multiscale model for the slow viscoelastic response of liquid foams