Force Distributions near Jamming and Glass Transitions.
We calculate the distribution of interparticle normal forces P(F) near the glass and jamming transitions in model supercooled liquids and foams, respectively. P(F) develops a peak that appears near the glass or jamming transitions, whose height increases with decreasing temperature, decreasing shear stress and increasing packing density. A similar shape of P(F) was observed in experiments on static granular packings. We propose that the appearance of this peak signals the development of a yield stress. The sensitivity of the peak to temperature, shear stress, and density lends credence to the recently proposed generalized jamming phase diagram.
O'Hern
CS
Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, California 90095-1569 and James Franck Institute, The University of Chicago, Chicago, Illinois 60637.
Langer
SA
Liu
AJ
Nagel
SR