{
  "study_name": "hydrotech_beam_doe_phase1_real",
  "phase": "Phase 1 \u2014 LHS DoE",
  "project": "Hydrotech Beam Structural Optimization",
  "timestamp": "2026-02-14T22:24:29.123157+00:00",
  "configuration": {
    "n_lhs_samples": 50,
    "seed": 42,
    "baseline_included": true,
    "algorithm": "Latin Hypercube Sampling (scipy.stats.qmc)",
    "constraint_handling": "Deb's feasibility rules",
    "displacement_limit_mm": 10.0,
    "stress_limit_MPa": 130.0
  },
  "design_variables": [
    {
      "name": "beam_half_core_thickness",
      "nx_expression": "beam_half_core_thickness",
      "lower": 10.0,
      "upper": 40.0,
      "baseline": 25.162,
      "type": "continuous"
    },
    {
      "name": "beam_face_thickness",
      "nx_expression": "beam_face_thickness",
      "lower": 10.0,
      "upper": 40.0,
      "baseline": 21.504,
      "type": "continuous"
    },
    {
      "name": "holes_diameter",
      "nx_expression": "holes_diameter",
      "lower": 150.0,
      "upper": 450.0,
      "baseline": 300.0,
      "type": "continuous"
    },
    {
      "name": "hole_count",
      "nx_expression": "hole_count",
      "lower": 5.0,
      "upper": 15.0,
      "baseline": 10.0,
      "type": "integer"
    }
  ],
  "results": {
    "total_trials": 51,
    "solved": 39,
    "geo_infeasible": 12,
    "solve_failed": 0,
    "fully_feasible": 0,
    "solve_success_rate": 76.5,
    "feasibility_rate": 0.0
  },
  "best_feasible": null,
  "phase1_gate_check": {
    "min_feasible_5": false,
    "solve_success_80pct": false,
    "gate_passed": false
  }
}