Pinaki Chaudhuri, Jürgen Horbach
A colloidal glass confined between rough walls is investigated using non-equilibrium molecular dynamics computer simulations. The onset of flow, under the imposition of a uniform shear stress, is studied. When the imposed stress is gradually decreased, the timescale for the onset of steady flow diverges. Near this yield-stress regime, persistent creep is observed. This regime of slow deformation is shown to be associated with long-lived dynamical heterogeneities, which are strongly influenced by the initial state.
View original:
http://arxiv.org/abs/1302.0910
No comments:
Post a Comment