期刊
PHYSICAL REVIEW E
卷 80, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.80.061304
关键词
discs (structures); elastic constants; granular materials; probability
资金
- NSF [CBET-0348175, DMR-0448838, DMS-0835742]
- Yale's Center for High Performance Computing
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0967262] Funding Source: National Science Foundation
We developed an experimental method to generate mechanically stable (MS) packings of frictionless disks and performed coordinated experiments and simulations to characterize MS packings in small systems. For a given system geometry, MS packings occur as discrete, well-separated points in configuration space with probabilities that vary by many orders of magnitude and are robust with respect to the packing preparation. Over a continuous range of system geometries, MS packings occur as distinct geometrical families and only a small fraction of families are sampled via quasistatic dynamics. These results suggest that the most frequent MS packings may dominate the structural and mechanical properties of dense granular media.
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