{
  "annotation_id": "e7a50691-da13-4e86-a75c-08536811f9ec",
  "date_created": "2026-03-02T18:00:29.152000Z",
  "date_modified": "2026-03-02T18:00:29.152000Z",
  "file_hash": "b2401a17671fd49570eac0faa58547485bb256c74829c31bbaf2b758211e4498",
  "private": false,
  "record": {
    "abstract": "Crack propagations in quasi-static fracture are studied theoretically. The\nGriffith theory is applied to discuss a crack extension condition and motion of\ncrack tips in straight propagations. Stability of the straight propagations is\ninvestigated based on the simple assumption that a curvature near the crack tip\nis determined by a singular shear stress. It is shown that straight\npropagations become unstable under ceatain conditions. Combined with boundary\neffects, this instability leads to an oscillatory propagation of cracks. The\ncritical conditions are calculated quantitatively.",
    "arxiv_id": "patt-sol/9311001",
    "authors": [
      "Shin-ichi Sasa",
      "Ken Sekimoto"
    ],
    "categories": [
      "patt-sol",
      "nlin.PS"
    ],
    "doi": "10.1103/PhysRevE.50.R1733",
    "title": "Oscillatory instability of crack propagations in quasi-static fracture",
    "url": "https://arxiv.org/abs/patt-sol/9311001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3decd066-5082-4557-af6e-7dc7517eb89c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}