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Simulated granular packings with different particle friction coefficient muare examined. The distribution of the particle-particle and particle-wallnormal and tangential contact forces P(f) are computed and compared withexisting experimental data. Here f equivalent to F/F-bar is the contact force Fnormalized by the average value F-bar. P(f) exhibits exponential-like decay atlarge forces, a plateau/peak near f = 1, with additional features at forcessmaller than the average that depend on mu. Computations of the force-forcespatial distribution function and the contact point radial distributionfunction indicate that correlations between forces are only weakly dependent onfriction and decay rapidly beyond approximately three particle diameters.Distributions of the particle-particle contact angles show that the contactnetwork is not isotropic and only weakly dependent on friction. Highforce-bearing structures, or force chains, do not play a dominant role in thesethree dimensional, unloaded packings.Comment: 11 pages, 13 figures, submitted to PR

Statistics of the contact network in frictional and frictionless granular packings