{
  "schema": "physicsbase.case-study/1.0",
  "case": {
    "schema": "physicsbase.cad-demo/1.0",
    "id": "nasa-crm-wing",
    "title": "NASA CRM left wing envelope \u2014 upward proof load",
    "description": "A reproducible, model-scale solid envelope derived from the measured bounds of NASA's official Common Research Model left-wing STEP. The root is fixed and an upward concept proof load is distributed over the tip face.",
    "source_url": "https://commonresearchmodel.larc.nasa.gov/geometry/original-cad-files/",
    "source_sha256": "c220cd76b3ea0e440d5a586141b1fd803522fa9911da1a33980c6efd4762b600",
    "upstream_commit": null,
    "author": "NASA Common Research Model team",
    "license": "NASA content usage guidelines",
    "license_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
    "material": {
      "name": "6061-T6 aluminum surrogate",
      "E": 69000000000.0,
      "nu": 0.33,
      "rho": 2700.0,
      "allowable_stress": 240000000.0
    },
    "coordinate_scale": 0.001,
    "mesh_size_source_units": 250.0,
    "mesh_policy": "coarse interactive concept mesh; the recovery estimator requires refinement before stresses are used for design",
    "boundary_conditions": {
      "fixed": {
        "axis": "y",
        "op": "max",
        "dofs": [
          "ux",
          "uy",
          "uz"
        ]
      },
      "loaded": {
        "axis": "y",
        "op": "min"
      },
      "component": "fz"
    },
    "upstream_filename": "LH WING-AS BUILT MODEL SCALE.stp",
    "upstream_sha256": "3dabf5dd9c53aa8985b8d4fcf65a09b30660a479c11c33f37ddee810c6e59c89",
    "derivative": {
      "kind": "five-section NACA 0012 solid loft fitted to upstream bounds",
      "generator": "generate_nasa_crm_wing_surrogate.py",
      "changes": "replaces the detailed wind-tunnel-model construction with a homogeneous outer-volume concept surrogate",
      "not_claimed": "exact NASA outer mold line, internal wing structure, manufacturing drawing, flight article, or certification model"
    },
    "load_n": 5000.0
  },
  "mesh": {
    "nodes": 216,
    "elements": 642,
    "type": "tet4"
  },
  "result": {
    "peak_von_mises_pa": 12960708.094017005,
    "max_displacement_m": 0.0008045046775523452,
    "nominal_safety_factor": 18.518,
    "equilibrium_relative_residual": 3.187415131833405e-12,
    "mesh_max_aspect_ratio": 6.65,
    "inverted_elements": 0,
    "estimated_discretization_error_percent": 64.95,
    "verification_verdict": "REVIEW"
  }
}