{
  "annotation_id": "aec17c4b-b541-4fbb-bc40-36e9f913e5ec",
  "date_created": "2026-03-02T18:01:18.085000Z",
  "date_modified": "2026-03-02T18:01:18.085000Z",
  "file_hash": "b63d1cc744522bcc1f8335bd6ff51b9b96f56a4b217d7b3392edcbcc25349f98",
  "private": false,
  "record": {
    "abstract": "We perform a detailed analysis of the contact force network in a dense\nconfined packing of pentagonal particles simulated by means of the contact\ndynamics method. The effect of particle shape is evidenced by comparing the\ndata from pentagon packing and from a packing with identical characteristics\nexcept for the circular shape of the particles. A counterintuitive finding of\nthis work is that, under steady shearing, the pentagon packing develops a lower\nstructural anisotropy than the disk packing. We show that this weakness is\ncompensated by a higher force anisotropy, leading to enhanced shear strength of\nthe pentagon packing. We revisit \"strong\" and \"weak\" force networks in the\npentagon packing, but our simulation data provide also evidence for a large\nclass of \"very weak\" forces carried mainly by vertex-to-edge contacts. The\nstrong force chains are mostly composed of edge-to-edge contacts with a marked\nzig-zag aspect and a decreasing exponential probability distribution as in a\ndisk packing.",
    "arxiv_id": "physics/0702055",
    "authors": [
      "\u00c9milien Azema",
      "Farhang Radjai",
      "Robert Peyroux",
      "Gilles Saussine"
    ],
    "categories": [
      "physics.class-ph"
    ],
    "doi": "10.1103/PhysRevE.76.011301",
    "journal_ref": "Physical Review E: Statistical, Nonlinear, and Soft Matter Physics\n  (2007) http://link.aps.org/doi/10.1103/PhysRevE.76.011301",
    "title": "Force transmission in a packing of pentagonal particles",
    "url": "https://arxiv.org/abs/physics/0702055"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3a17c618-b288-460d-a2e3-e68bbd1b7334",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}