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     "compliance_Nmm": -15177.589,
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      "19-20": [
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      "19-30": [
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      "19-36": [
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      "28-29": [
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      "28-66": [
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      "31-36": [
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      "33-36": [
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     "sec": 104.8,
     "solve_sec": 82.65,
     "cut_force_global_N": 2243.62,
     "cut_force_local_N": 25525.73,
     "cut_force_err_pct": 1050.14,
     "iface_force": [
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       "local_N": 2279.0,
       "err_pct": 353.5
      },
      {
       "iface": "19-66",
       "global_N": 736.2,
       "local_N": 1619.1,
       "err_pct": 317.6
      },
      {
       "iface": "20-18",
       "global_N": 265.2,
       "local_N": 935.6,
       "err_pct": 290.7
      },
      {
       "iface": "20-19",
       "global_N": 1306.2,
       "local_N": 874.7,
       "err_pct": 35.3
      },
      {
       "iface": "28-29",
       "global_N": 2144.3,
       "local_N": 220656.5,
       "err_pct": 10387.7
      },
      {
       "iface": "29-18",
       "global_N": 1820.6,
       "local_N": 207774.3,
       "err_pct": 11317.2
      },
      {
       "iface": "30-19",
       "global_N": 442.8,
       "local_N": 517.5,
       "err_pct": 83.7
      },
      {
       "iface": "33-36",
       "global_N": 1621.3,
       "local_N": 284939.7,
       "err_pct": 17670.1
      },
      {
       "iface": "36-17",
       "global_N": 453.3,
       "local_N": 42168.2,
       "err_pct": 9354.9
      },
      {
       "iface": "36-18",
       "global_N": 521.0,
       "local_N": 46133.2,
       "err_pct": 8772.5
      },
      {
       "iface": "36-19",
       "global_N": 1255.7,
       "local_N": 95180.2,
       "err_pct": 7483.9
      },
      {
       "iface": "36-38",
       "global_N": 473.0,
       "local_N": 150678.2,
       "err_pct": 31877.3
      },
      {
       "iface": "66-28",
       "global_N": 1214.5,
       "local_N": 2144.3,
       "err_pct": 231.5
      },
      {
       "iface": "94-93",
       "global_N": 0.2,
       "local_N": 0.1,
       "err_pct": null
      }
     ],
     "iface_force_err_wpct": 8272.22,
     "iface_force_err_max_pct": 31877.3,
     "iface_force_n": 13,
     "iface_force_missing": 1
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   "cand_sel_r_mm": 35.5,
   "ladder_stop": "요소를 1.8배 가늘게 하는 것조차 절점 약 1,160,129개로 상한 950,000개를 넘습니다(후보 부재 77,394절점 / 둘레 347,678절점) - 여기서 멈춥니다",
   "verdict": "판정 불가",
   "why": "판정에 쓸 수 있는 단계가 1개뿐입니다 — 요소를 1.8배 가늘게 하는 것조차 절점 약 1,160,129개로 상한 950,000개를 넘습니다(후보 부재 77,394절점 / 둘레 347,678절점) - 여기서 멈춥니다"
  },
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    3820.01,
    363.92
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   "merge_tol_mm": 29.2,
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    -602.53,
    -195902.46
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      {
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      {
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       "nodes": 14372
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      {
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       "h_mm": 40.64,
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      {
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       "nodes": 37440
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      {
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     "welds_tied": 723,
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     "cand_nodes": 26854,
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     "compliance_Nmm": 735952.903,
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      "4-134": [
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      "6-132": [
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      "9-132": [
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      "13-57": [
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      "13-74": [
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      "13-78": [
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      "14-132": [
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      "14-146": [
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      "15-18": [
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      "85-132": [
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      "85-134": [
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      "87-134": [
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      "132-136": [
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      "132-138": [
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      "134-136": [
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      "134-138": [
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     "solve_sec": 39.61,
     "cut_force_global_N": 198419.07,
     "cut_force_local_N": 194372.67,
     "cut_force_err_pct": 197.35,
     "iface_force": [
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       "err_pct": 134.6
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      {
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       "err_pct": 206.2
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      {
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       "err_pct": 184.8
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      {
       "iface": "9-132",
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      {
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      {
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      {
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      {
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      {
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      {
       "iface": "85-132",
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       "local_N": 19238.7,
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      {
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       "iface": "132-10",
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       "local_N": 21301.8,
       "err_pct": 23.2
      },
      {
       "iface": "132-14",
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       "local_N": 54093.3,
       "err_pct": 189.6
      },
      {
       "iface": "132-82",
       "global_N": 431.2,
       "local_N": 19408.4,
       "err_pct": null
      },
      {
       "iface": "134-10",
       "global_N": 1268.1,
       "local_N": 5298.6,
       "err_pct": null
      },
      {
       "iface": "134-87",
       "global_N": 0.0,
       "local_N": 27937.7,
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      },
      {
       "iface": "136-132",
       "global_N": 17098.2,
       "local_N": 20359.9,
       "err_pct": 184.4
      },
      {
       "iface": "136-134",
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       "local_N": 29687.6,
       "err_pct": 268.0
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      {
       "iface": "138-132",
       "global_N": 18397.9,
       "local_N": 32043.9,
       "err_pct": 259.0
      },
      {
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      {
       "iface": "144-57",
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       "local_N": 94925.4,
       "err_pct": 247.4
      },
      {
       "iface": "146-14",
       "global_N": 32602.1,
       "local_N": 46888.6,
       "err_pct": 51.6
      }
     ],
     "iface_force_err_wpct": 346.66,
     "iface_force_err_max_pct": 7043.6,
     "iface_force_n": 26,
     "iface_force_missing": 18
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      {
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      {
       "no": 17,
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       "h_target_mm": null,
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       "nodes": 14372
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      {
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      {
       "no": 83,
       "h_mm": 71.98,
       "h_target_mm": null,
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       "nodes": 27
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      {
       "no": 123,
       "h_mm": 20.85,
       "h_target_mm": null,
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       "nodes": 1908
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      {
       "no": 130,
       "h_mm": 38.26,
       "h_target_mm": null,
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       "nodes": 1841
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      {
       "no": 132,
       "h_mm": 5.19,
       "h_target_mm": 6.76,
       "h_hit": true,
       "nodes": 663196
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      {
       "no": 134,
       "h_mm": 13.56,
       "h_target_mm": null,
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       "nodes": 37440
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      {
       "no": 144,
       "h_mm": 15.76,
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       "nodes": 11280
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      {
       "no": 146,
       "h_mm": 13.39,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 18872
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     ],
     "nodes": 913803,
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     "parts": 12,
     "elem_mm": 5.397,
     "welds_tied": 738,
     "seeds": 783,
     "disp_mm": 4.373889249089647,
     "struct_MPa": 2892.665004312632,
     "cand_MPa": 2892.67,
     "cand_nodes": 480220,
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     "parts_meshed": 12,
     "cand_h_mm": [
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     "compliance_Nmm": 699436.386,
     "driven": 437,
     "interp_in_tet": 348,
     "interp_clamped": 89,
     "interp_nearest": 0,
     "rf_driven_N": [
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     "rf_by_iface_N": {
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      ],
      "4-134": [
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      ],
      "6-132": [
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      "6-134": [
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      ],
      "9-132": [
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      ],
      "9-134": [
       1016.28,
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      ],
      "10-130": [
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      ],
      "10-132": [
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      "10-134": [
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      "13-14": [
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      "13-57": [
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       -40950.48
      ],
      "13-74": [
       -445.74,
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      ],
      "13-78": [
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      "13-79": [
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      ],
      "14-132": [
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      "14-146": [
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      ],
      "15-18": [
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      "17-22": [
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      "17-33": [
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      "17-35": [
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      ],
      "17-36": [
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      ],
      "17-38": [
       -5026.43,
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      ],
      "17-39": [
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      "17-40": [
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      "17-41": [
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      "17-42": [
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      "17-43": [
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      "17-44": [
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      "17-45": [
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      "17-46": [
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      ],
      "17-76": [
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      "57-144": [
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      "80-130": [
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      "82-132": [
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      "82-146": [
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      "84-134": [
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      "85-132": [
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      "85-134": [
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      "87-134": [
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      "132-136": [
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      "132-138": [
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      "134-136": [
       -937.01,
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      ],
      "134-138": [
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     },
     "sec": 248.8,
     "solve_sec": 224.67,
     "cut_force_global_N": 198419.07,
     "cut_force_local_N": 191789.07,
     "cut_force_err_pct": 196.01,
     "iface_force": [
      {
       "iface": "4-132",
       "global_N": 17407.2,
       "local_N": 6500.5,
       "err_pct": 130.0
      },
      {
       "iface": "4-134",
       "global_N": 16052.6,
       "local_N": 17404.4,
       "err_pct": 206.4
      },
      {
       "iface": "6-132",
       "global_N": 27541.3,
       "local_N": 9766.8,
       "err_pct": 135.4
      },
      {
       "iface": "9-132",
       "global_N": 25334.6,
       "local_N": 13703.5,
       "err_pct": 154.1
      },
      {
       "iface": "9-134",
       "global_N": 8150.9,
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       "global_N": 154937.3,
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      },
      {
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       "global_N": 22350.1,
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      {
       "iface": "13-57",
       "global_N": 16132.7,
       "local_N": 64994.7,
       "err_pct": 349.9
      },
      {
       "iface": "13-74",
       "global_N": 9279.7,
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       "err_pct": 679.8
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      {
       "iface": "13-78",
       "global_N": 1476.1,
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      },
      {
       "iface": "15-18",
       "global_N": 732.5,
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       "err_pct": null
      },
      {
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      {
       "iface": "33-17",
       "global_N": 300.4,
       "local_N": 86362.7,
       "err_pct": null
      },
      {
       "iface": "35-17",
       "global_N": 2005.6,
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       "err_pct": 2620.2
      },
      {
       "iface": "36-17",
       "global_N": 453.3,
       "local_N": 92605.4,
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      },
      {
       "iface": "38-17",
       "global_N": 428.4,
       "local_N": 21672.1,
       "err_pct": null
      },
      {
       "iface": "39-17",
       "global_N": 72.1,
       "local_N": 21017.6,
       "err_pct": null
      },
      {
       "iface": "40-17",
       "global_N": 3683.1,
       "local_N": 113128.1,
       "err_pct": 3055.4
      },
      {
       "iface": "41-17",
       "global_N": 381.7,
       "local_N": 282277.0,
       "err_pct": null
      },
      {
       "iface": "42-17",
       "global_N": 520.7,
       "local_N": 150773.8,
       "err_pct": null
      },
      {
       "iface": "43-17",
       "global_N": 16.5,
       "local_N": 294952.4,
       "err_pct": null
      },
      {
       "iface": "44-17",
       "global_N": 18.6,
       "local_N": 386889.1,
       "err_pct": null
      },
      {
       "iface": "45-17",
       "global_N": 18.6,
       "local_N": 694771.7,
       "err_pct": null
      },
      {
       "iface": "46-17",
       "global_N": 16.5,
       "local_N": 67094.3,
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      },
      {
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      },
      {
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       "global_N": 3628.5,
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      },
      {
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       "global_N": 2476.9,
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      {
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       "global_N": 2233.0,
       "local_N": 32705.2,
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      },
      {
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       "global_N": 1024.8,
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      },
      {
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       "global_N": 3151.8,
       "local_N": 13341.5,
       "err_pct": 458.3
      },
      {
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       "global_N": 2128.2,
       "local_N": 51088.7,
       "err_pct": 2399.5
      },
      {
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       "global_N": 8508.9,
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      },
      {
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       "global_N": 9580.8,
       "local_N": 37887.7,
       "err_pct": 374.2
      },
      {
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       "global_N": 22323.9,
       "local_N": 13435.8,
       "err_pct": 40.9
      },
      {
       "iface": "132-14",
       "global_N": 24377.3,
       "local_N": 27763.9,
       "err_pct": 40.0
      },
      {
       "iface": "132-82",
       "global_N": 431.2,
       "local_N": 13580.9,
       "err_pct": null
      },
      {
       "iface": "134-10",
       "global_N": 1268.1,
       "local_N": 5651.1,
       "err_pct": null
      },
      {
       "iface": "134-87",
       "global_N": 0.0,
       "local_N": 18878.9,
       "err_pct": null
      },
      {
       "iface": "136-132",
       "global_N": 17098.2,
       "local_N": 12812.2,
       "err_pct": 167.5
      },
      {
       "iface": "136-134",
       "global_N": 17156.3,
       "local_N": 30151.3,
       "err_pct": 270.4
      },
      {
       "iface": "138-132",
       "global_N": 18397.9,
       "local_N": 15105.5,
       "err_pct": 171.3
      },
      {
       "iface": "138-134",
       "global_N": 18397.9,
       "local_N": 30545.4,
       "err_pct": 248.3
      },
      {
       "iface": "144-57",
       "global_N": 27843.5,
       "local_N": 91317.3,
       "err_pct": 234.2
      },
      {
       "iface": "146-14",
       "global_N": 32602.1,
       "local_N": 49077.8,
       "err_pct": 59.4
      }
     ],
     "iface_force_err_wpct": 327.33,
     "iface_force_err_max_pct": 6403.7,
     "iface_force_n": 26,
     "iface_force_missing": 18
    }
   ],
   "fix_points_inside": 6,
   "cand_sel_r_mm": 374.3,
   "ladder_stop": "요소를 1.8배 가늘게 하는 것조차 절점 약 7,212,573개로 상한 950,000개를 넘습니다(후보 부재 663,196절점 / 둘레 250,607절점) - 여기서 멈춥니다",
   "h_ratio": 2.61,
   "h_pair_mm": [
    13.52,
    5.19
   ],
   "stages_done": 2,
   "conv": {
    "disp_pct_ref_only": 0.0,
    "disp_note": "경계 강제값 — 판정에 쓰지 않음",
    "cand_MPa_pct": 169.47,
    "compliance_pct": 4.96,
    "worst_pct": 169.47
   },
   "verdict": "특이점 확정",
   "why": "요소를 13.5mm → 5.2mm (2.61배) 로 줄였는데 이 자리 응력이 169.5% 더 커졌습니다 - 값이 발산하는 특이점입니다(실제 위험이 아님)"
  },
  {
   "cand": 3,
   "at": [
    5386.13,
    3958.9,
    417.03
   ],
   "kind": "특이점 의심",
   "parts_n": 12,
   "R_mm": 218.0,
   "drive_pts": 289,
   "cand_to_drive_mm": 224.4,
   "load_points_inside": 0,
   "cut_ifaces": 27,
   "merged_n": 0,
   "merged": [],
   "merge_tol_mm": 29.2,
   "global_cut_N": [
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    -68774.44,
    -170675.82
   ],
   "stage": [
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     "h_target_mm": 19.48,
     "h_miss_parts": [],
     "per_part_h": [
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       "no": 2,
       "h_mm": 9.56,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 11012
      },
      {
       "no": 15,
       "h_mm": 10.56,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 73203
      },
      {
       "no": 81,
       "h_mm": 9.11,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 12055
      },
      {
       "no": 83,
       "h_mm": 9.5,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 5512
      },
      {
       "no": 123,
       "h_mm": 9.72,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 13179
      },
      {
       "no": 130,
       "h_mm": 38.26,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 1841
      },
      {
       "no": 132,
       "h_mm": 10.45,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 93395
      },
      {
       "no": 134,
       "h_mm": 13.46,
       "h_target_mm": 19.478,
       "h_hit": true,
       "nodes": 39014
      },
      {
       "no": 136,
       "h_mm": 9.84,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 6591
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      {
       "no": 138,
       "h_mm": 106.87,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 27
      },
      {
       "no": 144,
       "h_mm": 12.39,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 22234
      },
      {
       "no": 146,
       "h_mm": 10.61,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 37129
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     ],
     "nodes": 315192,
     "elems": 162333,
     "parts": 12,
     "elem_mm": 10.498,
     "welds_tied": 578,
     "seeds": 610,
     "disp_mm": 3.0694544090368896,
     "struct_MPa": 2273.5974010433333,
     "cand_MPa": 152.22,
     "cand_nodes": 28139,
     "cand_parts_in_mesh": [
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     ],
     "parts_meshed": 12,
     "cand_h_mm": [
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     "compliance_Nmm": 68483.751,
     "driven": 289,
     "interp_in_tet": 283,
     "interp_clamped": 6,
     "interp_nearest": 0,
     "rf_driven_N": [
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      33799.84,
      250518.29
     ],
     "rf_by_iface_N": {
      "2-84": [
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      "4-132": [
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      "4-134": [
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       -2089.07,
       8761.93
      ],
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      "17-132": [
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      "87-134": [
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     "sec": 56.4,
     "solve_sec": 45.26,
     "cut_force_global_N": 192110.46,
     "cut_force_local_N": 256809.91,
     "cut_force_err_pct": 231.63,
     "iface_force": [
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       "local_N": 15445.8,
       "err_pct": 188.0
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      },
      {
       "iface": "9-132",
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       "local_N": 18894.6,
       "err_pct": 174.6
      },
      {
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      {
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      },
      {
       "iface": "15-18",
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       "err_pct": null
      },
      {
       "iface": "79-81",
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       "local_N": 9210.8,
       "err_pct": 424.2
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      {
       "iface": "80-130",
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       "local_N": 28619.0,
       "err_pct": 1238.3
      },
      {
       "iface": "81-13",
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       "local_N": 10633.8,
       "err_pct": 68.6
      },
      {
       "iface": "81-17",
       "global_N": 3678.0,
       "local_N": 12306.0,
       "err_pct": 245.7
      },
      {
       "iface": "84-2",
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      },
      {
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      {
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       "err_pct": 208.2
      },
      {
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       "err_pct": 104.4
      },
      {
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       "local_N": 18600.3,
       "err_pct": 19.0
      },
      {
       "iface": "132-14",
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       "local_N": 22151.3,
       "err_pct": 38.6
      },
      {
       "iface": "132-17",
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       "local_N": 10044.4,
       "err_pct": 277.0
      },
      {
       "iface": "132-82",
       "global_N": 431.2,
       "local_N": 21113.4,
       "err_pct": null
      },
      {
       "iface": "134-10",
       "global_N": 1268.1,
       "local_N": 2764.5,
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      },
      {
       "iface": "134-87",
       "global_N": 0.0,
       "local_N": 28329.9,
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      },
      {
       "iface": "136-4",
       "global_N": 6205.3,
       "local_N": 6526.6,
       "err_pct": 24.4
      },
      {
       "iface": "144-57",
       "global_N": 27843.5,
       "local_N": 73218.4,
       "err_pct": 167.6
      },
      {
       "iface": "146-14",
       "global_N": 32602.1,
       "local_N": 39402.1,
       "err_pct": 51.0
      }
     ],
     "iface_force_err_wpct": 233.53,
     "iface_force_err_max_pct": 1238.3,
     "iface_force_n": 22,
     "iface_force_missing": 5
    },
    {
     "n": 2,
     "h_target_mm": 6.73,
     "h_miss_parts": [],
     "per_part_h": [
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       "h_mm": 9.56,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 11012
      },
      {
       "no": 15,
       "h_mm": 10.56,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 73203
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      {
       "no": 81,
       "h_mm": 9.11,
       "h_target_mm": null,
       "h_hit": null,
       "nodes": 12055
      },
      {
       "no": 83,
       "h_mm": 9.5,
       "h_target_mm": null,
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       "nodes": 5512
      },
      {
       "no": 123,
       "h_mm": 9.72,
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      {
       "no": 130,
       "h_mm": 38.26,
       "h_target_mm": null,
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       "nodes": 1841
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      {
       "no": 132,
       "h_mm": 10.45,
       "h_target_mm": null,
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       "nodes": 93395
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      {
       "no": 134,
       "h_mm": 5.17,
       "h_target_mm": 6.73,
       "h_hit": true,
       "nodes": 550606
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      {
       "no": 136,
       "h_mm": 9.84,
       "h_target_mm": null,
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       "nodes": 6591
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      {
       "no": 138,
       "h_mm": 106.87,
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       "nodes": 27
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      {
       "no": 144,
       "h_mm": 12.39,
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      {
       "no": 146,
       "h_mm": 10.61,
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     ],
     "nodes": 826784,
     "elems": 482094,
     "parts": 12,
     "elem_mm": 5.481,
     "welds_tied": 591,
     "seeds": 610,
     "disp_mm": 3.0694353981911724,
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     "cand_MPa": 769.37,
     "cand_nodes": 513013,
     "cand_parts_in_mesh": [
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     ],
     "parts_meshed": 12,
     "cand_h_mm": [
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     "compliance_Nmm": 66516.498,
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     "interp_in_tet": 283,
     "interp_clamped": 6,
     "interp_nearest": 0,
     "rf_driven_N": [
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     "rf_by_iface_N": {
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      "6-134": [
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      "9-132": [
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      "9-134": [
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      "13-130": [
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      "85-134": [
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      "87-134": [
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     },
     "sec": 234.4,
     "solve_sec": 210.34,
     "cut_force_global_N": 192110.46,
     "cut_force_local_N": 201671.42,
     "cut_force_err_pct": 202.57,
     "iface_force": [
      {
       "iface": "4-132",
       "global_N": 17407.2,
       "local_N": 15042.7,
       "err_pct": 186.0
      },
      {
       "iface": "4-134",
       "global_N": 16052.6,
       "local_N": 14532.5,
       "err_pct": 188.5
      },
      {
       "iface": "6-132",
       "global_N": 27541.3,
       "local_N": 13654.5,
       "err_pct": 149.5
      },
      {
       "iface": "9-132",
       "global_N": 25334.6,
       "local_N": 19102.2,
       "err_pct": 175.4
      },
      {
       "iface": "9-134",
       "global_N": 8150.9,
       "local_N": 4261.6,
       "err_pct": 152.3
      },
      {
       "iface": "10-130",
       "global_N": 154937.3,
       "local_N": 426388.3,
       "err_pct": 373.5
      },
      {
       "iface": "13-130",
       "global_N": 24639.8,
       "local_N": 33475.0,
       "err_pct": 187.2
      },
      {
       "iface": "13-132",
       "global_N": 19629.4,
       "local_N": 29438.9,
       "err_pct": 241.8
      },
      {
       "iface": "15-18",
       "global_N": 732.5,
       "local_N": 36499.9,
       "err_pct": null
      },
      {
       "iface": "79-81",
       "global_N": 2476.9,
       "local_N": 9205.5,
       "err_pct": 425.5
      },
      {
       "iface": "80-130",
       "global_N": 2233.0,
       "local_N": 29277.4,
       "err_pct": 1276.0
      },
      {
       "iface": "81-13",
       "global_N": 12055.6,
       "local_N": 10959.4,
       "err_pct": 66.9
      },
      {
       "iface": "81-17",
       "global_N": 3678.0,
       "local_N": 12546.2,
       "err_pct": 251.2
      },
      {
       "iface": "84-2",
       "global_N": 1024.8,
       "local_N": 4950.6,
       "err_pct": null
      },
      {
       "iface": "84-132",
       "global_N": 3151.8,
       "local_N": 9312.3,
       "err_pct": 374.8
      },
      {
       "iface": "84-134",
       "global_N": 2128.2,
       "local_N": 6531.4,
       "err_pct": 333.1
      },
      {
       "iface": "85-132",
       "global_N": 8508.9,
       "local_N": 9731.7,
       "err_pct": 211.4
      },
      {
       "iface": "85-134",
       "global_N": 9580.8,
       "local_N": 5205.8,
       "err_pct": 151.8
      },
      {
       "iface": "132-10",
       "global_N": 22323.9,
       "local_N": 18725.1,
       "err_pct": 18.4
      },
      {
       "iface": "132-14",
       "global_N": 24377.3,
       "local_N": 22317.6,
       "err_pct": 38.3
      },
      {
       "iface": "132-17",
       "global_N": 2951.3,
       "local_N": 9336.8,
       "err_pct": 264.0
      },
      {
       "iface": "132-82",
       "global_N": 431.2,
       "local_N": 24828.8,
       "err_pct": null
      },
      {
       "iface": "134-10",
       "global_N": 1268.1,
       "local_N": 1918.6,
       "err_pct": null
      },
      {
       "iface": "134-87",
       "global_N": 0.0,
       "local_N": 22966.3,
       "err_pct": null
      },
      {
       "iface": "136-4",
       "global_N": 6205.3,
       "local_N": 5495.1,
       "err_pct": 41.9
      },
      {
       "iface": "144-57",
       "global_N": 27843.5,
       "local_N": 72302.3,
       "err_pct": 164.2
      },
      {
       "iface": "146-14",
       "global_N": 32602.1,
       "local_N": 38964.6,
       "err_pct": 50.1
      }
     ],
     "iface_force_err_wpct": 226.22,
     "iface_force_err_max_pct": 1276.0,
     "iface_force_n": 22,
     "iface_force_missing": 5
    }
   ],
   "fix_points_inside": 6,
   "cand_sel_r_mm": 433.9,
   "ladder_stop": "요소를 1.8배 가늘게 하는 것조차 절점 약 6,056,219개로 상한 950,000개를 넘습니다(후보 부재 550,606절점 / 둘레 276,178절점) - 여기서 멈춥니다",
   "h_ratio": 2.6,
   "h_pair_mm": [
    13.46,
    5.17
   ],
   "stages_done": 2,
   "conv": {
    "disp_pct_ref_only": 0.0,
    "disp_note": "경계 강제값 — 판정에 쓰지 않음",
    "cand_MPa_pct": 405.43,
    "compliance_pct": 2.87,
    "worst_pct": 405.43
   },
   "verdict": "특이점 확정",
   "why": "요소를 13.5mm → 5.2mm (2.60배) 로 줄였는데 이 자리 응력이 405.4% 더 커졌습니다 - 값이 발산하는 특이점입니다(실제 위험이 아님)"
  }
 ]
}