Rearrangements in 2D packings

MERLIJN VAN DEEN; JOHANNES SIMON; M. VAN HECKE; SIMON DAGOIS-BOHY; L. R. GÓMEZ; ZORANA ZERAVCIC; BRIAN TIGHE

Baltimore

Congreso; March meeting of the American Physical Society; 2013

American Physical Society

Using computer simulations of frictionless, harmonic, packings, we have investigated theeffects of global shear deformations on a local scale. We have focused on the making andbreaking of contacts between particles, as a change in the contact network signals a departurefrom linear response. We show the deformation at which the first contact change happens canbe predicted, using simple scaling arguments, from the initial pressure and the number ofparticles. In addition, we show the also probability of creating versus breaking a contact can beunderstood. Finally, we are able to show the locality of the rearrangements in the packing.