Transition pathways between solid and liquid state in suspensions.
Suspensions containing rigid monodisperse spherical particles in a Newtonian carrier liquid are investigated experimentally, providing evidence for solid and liquid states in a transient shear rate from rest. Between these two states a transition takes place; the transition pathways from solid to liquid and from liquid to solid being different. The dynamics of the transition are shown, with the material in this regime reacting as a highly nonlinear system. This involves inverting the input to output and vice versa and comparing them. A key feature of the transition regime is a material instability caused by the collapse of the particle network structure.
Heymann
Lutz
L
Department of Applied Mechanics and Fluid Dynamics, University of Bayreuth, D-95440 Bayreuth, Germany.
Aksel
Nuri
N