Force distributions in frictional granular media

V. S. Akella, M. M. Bandi, H. George E. Hentschel, Itamar Procaccia, Saikat Roy

Research output: Contribution to journalArticlepeer-review


We report a joint experimental and theoretical investigation of the probability distribution functions (PDFs) of the normal and tangential (frictional) forces in amorphous frictional media. We consider both the joint PDF of normal and tangential forces together, and the marginal PDFs of normal forces separately and tangential forces separately. A maximum entropy formalism is utilized for all these cases after identifying the appropriate constraints. Excellent agreements with both experimental and simulation data are reported. The proposed joint PDF predicts giant slip events at low pressures, again in agreement with observations.

Original languageEnglish
Article number012905
Number of pages11
JournalPhysical Review E
Issue number1
StatePublished - 20 Jul 2018


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