{
  "annotation_id": "7c1bf458-cf7b-4deb-9175-1c6cd6e51e7f",
  "date_created": "2026-03-02T18:01:14.509000Z",
  "date_modified": "2026-03-02T18:01:14.509000Z",
  "file_hash": "a5ade32e68820fd2fabbb713a26e91e8870618bc2dbfd46e3afd433b46ac1f69",
  "private": false,
  "record": {
    "abstract": "A light-weight \"inflatable\" tensioned-membrane-structure vacuum container is\nproposed and its stability is analyzed. The proposed structure consists of a\npressurized lobed cylindrical \"wall\" surrounding a central evacuated space.\nStability is analyzed by discretizing the system and diagonalizing the second\nderivative of the potential energy. The structure is found to be stable when\nthe pressure in the wall is greater than a critical pressure. When membranes\nare non-elastic, the critical pressure is found to be greater than the pressure\nrequired for equilibrium by a factor of 4/3. When membranes have only finite\nstiffness, a first order correction to the critical pressure is found.\nPreliminary experimental data shows that a stable structure can be made in this\nway, and that the observed critical pressure is consistent with theory. It is\nalso found that such structures can be designed to have net positive buoyancy\nin air.",
    "arxiv_id": "physics/0610222",
    "authors": [
      "Sean A. Barton"
    ],
    "categories": [
      "physics.class-ph"
    ],
    "doi": "10.1115/1.2912742",
    "journal_ref": "Journal of Applied Mechanics, July 2008, Vol. 75 / 041010",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Stability Analysis of an Inflatable Vacuum Chamber",
    "url": "https://arxiv.org/abs/physics/0610222"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3a87fc46-5b8a-432b-9e06-4c61bc405c45",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}