{
  "optimization": {
    "max_iterations": 100,
    "seed": 42,
    "evaluate_baseline_first": true,
    "sampler": {
      "type": "TPE",
      "n_startup_trials": 15,
      "n_ei_candidates": 150,
      "multivariate": true,
      "gamma": 0.25,
      "prior_weight": 1.0
    }
  },
  "baseline": {
    "parameter1": 10.0,
    "parameter2": 20.0
  },
  "design_variables": {
    "parameter1": {
      "type": "float",
      "low": 5.0,
      "high": 15.0,
      "description": "First design parameter",
      "enabled": true
    },
    "parameter2": {
      "type": "float",
      "low": 10.0,
      "high": 30.0,
      "description": "Second design parameter",
      "enabled": true
    }
  },
  "objectives": {
    "primary_strategy": "weighted_sum",
    "direction": "minimize",
    "metrics": {
      "max_stress": {
        "weight": 10,
        "target": 200.0,
        "description": "Maximum von Mises stress",
        "units": "MPa",
        "enabled": true,
        "extractor": "nastran_stress",
        "extractor_params": {
          "subcase": 101,
          "stress_type": "von_mises"
        }
      },
      "mass": {
        "weight": 1,
        "target": 0.5,
        "description": "Total mass",
        "units": "kg",
        "enabled": true,
        "extractor": "nx_mass",
        "extractor_params": {
          "bodies": "all"
        }
      }
    }
  },
  "nx_settings": {
    "sim_path": "path/to/model.sim",
    "solution_name": "Solution 1",
    "post_solve_delay_s": 5,
    "op2_timeout_s": 1800,
    "op2_stable_s": 4
  },
  "post_processing": {
    "archive_results": true,
    "export_expressions": true,
    "custom_scripts": []
  }
}