{
  "date": "2026-09-07",
  "level": "source-only",
  "kind": "Independent analytical teaching calculations; no FEM/COMSOL runtime results",
  "geometry": {
    "insideRadiusMm": 500,
    "outsideRadiusMm": 510,
    "externalPressureMPa": 0,
    "closedEnds": true
  },
  "cases": [
    {
      "pressureMPa": 2,
      "hoopInsideMPa": 101.00990099009901,
      "hoopOutsideMPa": 99.00990099009901,
      "radialInsideMPa": -2,
      "radialOutsideMPa": 0,
      "axialMPa": 49.504950495049506,
      "endForceN": 1570796.3267948965,
      "metalAreaMm2": 31730.08580125691
    },
    {
      "pressureMPa": 3,
      "hoopInsideMPa": 151.5148514851485,
      "hoopOutsideMPa": 148.5148514851485,
      "radialInsideMPa": -3,
      "radialOutsideMPa": 0,
      "axialMPa": 74.25742574257426,
      "endForceN": 2356194.490192345,
      "metalAreaMm2": 31730.08580125691
    }
  ],
  "inverse": {
    "targetInsideHoopMPa": 80,
    "pressureMPa": 1.5840031366398746
  },
  "thicknessTransfer": {
    "body": {
      "nominal": 12,
      "allowances": [
        1,
        1
      ],
      "effective": 10
    },
    "nozzle": {
      "nominal": 8,
      "allowances": [
        0.5,
        0.5
      ],
      "effective": 7
    }
  },
  "linearizationTeachingProfile": {
    "thicknessMm": 10,
    "membraneMPa": 100,
    "surfaceBendingMPa": [
      -20,
      20
    ]
  },
  "notExecuted": [
    "FEM calculation",
    "COMSOL job",
    "CAD import",
    "Mesh convergence sequence",
    "Save/reopen",
    "Code assessment"
  ]
}