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    "max_error_pct": 0.5942051199847104,
    "pass": true
  },
  "plastic_trend": {
    "method": "max von Mises vs. pressure; below p_yield_exact should track the elastic Lame prediction at the bore, above it should fall increasingly below the (unbounded) elastic extrapolation as the bore yields and hardens instead -- qualitative + first-yield onset check, NOT compared to p_collapse (material hardens, no true collapse)",
    "points": [
      {
        "pressure_Pa": 54036601.65977203,
        "pressure_over_p_yield_exact": 0.5,
        "max_von_mises_fem_Pa": 118662554.04051499,
        "elastic_prediction_von_mises_at_bore_Pa": 125000000.00000003,
        "elapsed_s": 518.31001496315
      },
      {
        "pressure_Pa": 97265882.98758966,
        "pressure_over_p_yield_exact": 0.9,
        "max_von_mises_fem_Pa": 213592597.27387872,
        "elastic_prediction_von_mises_at_bore_Pa": 225000000.00000003,
        "elapsed_s": 537.1233141422272
      },
      {
        "pressure_Pa": 113476863.48552127,
        "pressure_over_p_yield_exact": 1.05,
        "max_von_mises_fem_Pa": 248011914.69488856,
        "elastic_prediction_von_mises_at_bore_Pa": 262500000.00000003,
        "elapsed_s": 7143.696676969528
      },
      {
        "pressure_Pa": 140495164.31540728,
        "pressure_over_p_yield_exact": 1.3,
        "max_von_mises_fem_Pa": 251684138.8352926,
        "elastic_prediction_von_mises_at_bore_Pa": 325000000.0,
        "elapsed_s": 608.6499707698822
      },
      {
        "pressure_Pa": 172917125.3112705,
        "pressure_over_p_yield_exact": 1.6,
        "max_von_mises_fem_Pa": 255188163.655059,
        "elastic_prediction_von_mises_at_bore_Pa": 400000000.00000006,
        "elapsed_s": 818.0253617763519
      }
    ]
  },
  "pass": true
}