Material of “ Universal microstructure and mechanical stability of jammed packings ”
نویسندگان
چکیده
Patrick Charbonneau, 2 Eric I. Corwin, Giorgio Parisi, and Francesco Zamponi Department of Chemistry, Duke University, Durham, North Carolina 27708, USA Department of Physics, Duke University, Durham, North Carolina 27708, USA Department of Physics, University of Oregon, Eugene, Oregon 97403, USA Dipartimento di Fisica, Sapienza Universitá di Roma, INFN, Sezione di Roma I, IPFC – CNR, P.le A. Moro 2, I-00185 Roma, Italy LPT, École Normale Supérieure, UMR 8549 CNRS, 24 Rue Lhomond, 75005 France
منابع مشابه
Universal microstructure and mechanical stability of jammed packings.
The mechanical properties of jammed packings depend sensitively on their detailed local structure. Here we provide a complete characterization of the pair correlation close to contact and of the force distribution of jammed frictionless spheres. In particular we discover a set of new scaling relations that connect the behavior of particles bearing small forces and those bearing no force but tha...
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Maximally random jammed (MRJ) sphere packing is a prototypical example of a system naturally poised at the margin between underconstraint and overconstraint. This marginal stability has traditionally been understood in terms of isostaticity, the equality of the number of mechanical contacts and the number of degrees of freedom. Quasicontacts, pairs of spheres on the verge of coming in contact, ...
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Hyperuniformity characterizes a state of matter that is poised at a critical point at which density or volume-fraction fluctuations are anomalously suppressed at infinite wavelengths. Recently, much attention has been given to the link between strict jamming (mechanical rigidity) and (effective or exact) hyperuniformity in frictionless hard-particle packings. However, in doing so, one must nece...
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We explore adhesive loose packings of small dry spherical particles of micrometer size using 3D discrete-element simulations with adhesive contact mechanics and statistical ensemble theory. A dimensionless adhesion parameter (Ad) successfully combines the effects of particle velocities, sizes and the work of adhesion, identifying a universal regime of adhesive packings for Ad > 1. The structura...
متن کاملHyperuniform long-range correlations are a signature of disordered jammed hard-particle packings.
We show that quasi-long-range (QLR) pair correlations that decay asymptotically with scaling r(-(d+1)) in d-dimensional Euclidean space R(d), trademarks of certain quantum systems and cosmological structures, are a universal signature of maximally random jammed (MRJ) hard-particle packings. We introduce a novel hyperuniformity descriptor in MRJ packings by studying local-volume-fraction fluctua...
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تاریخ انتشار 2012