Atomizer/studies/Drone_Gimbal/drone_gimbal_arm_optimization/atomizer_spec.json

{
  "meta": {
    "version": "2.0",
    "created": "2026-01-17T15:35:12.010333Z",
    "modified": "2026-01-17T15:35:12.010333Z",
    "created_by": "migration",
    "modified_by": "migration",
    "study_name": "drone_gimbal_arm_optimization",
    "description": "Drone Camera Gimbal Support Arm - Multi-Objective Lightweight Design",
    "tags": []
  },
  "model": {
    "sim": {
      "path": "1_setup\\model\\Beam_sim1.sim",
      "solver": "nastran"
    }
  },
  "design_variables": [
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      "id": "dv_001",
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      "expression_name": "beam_half_core_thickness",
      "type": "continuous",
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        "min": 5,
        "max": 10
      },
      "baseline": null,
      "units": "",
      "enabled": true,
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      "canvas_position": {
        "x": 50,
        "y": 100
      }
    },
    {
      "id": "dv_002",
      "name": "param_2",
      "expression_name": "beam_face_thickness",
      "type": "continuous",
      "bounds": {
        "min": 1,
        "max": 3
      },
      "baseline": null,
      "units": "",
      "enabled": true,
      "description": "Thickness of beam face sheets (mm) - bending resistance",
      "canvas_position": {
        "x": 50,
        "y": 180
      }
    },
    {
      "id": "dv_003",
      "name": "param_3",
      "expression_name": "holes_diameter",
      "type": "continuous",
      "bounds": {
        "min": 10,
        "max": 50
      },
      "baseline": null,
      "units": "",
      "enabled": true,
      "description": "Diameter of lightening holes (mm) - weight reduction",
      "canvas_position": {
        "x": 50,
        "y": 260
      }
    },
    {
      "id": "dv_004",
      "name": "param_4",
      "expression_name": "hole_count",
      "type": "continuous",
      "bounds": {
        "min": 8,
        "max": 14
      },
      "baseline": null,
      "units": "",
      "enabled": true,
      "description": "Number of lightening holes - balance weight vs strength",
      "canvas_position": {
        "x": 50,
        "y": 340
      }
    }
  ],
  "extractors": [
    {
      "id": "ext_001",
      "name": "Mass Extractor",
      "type": "mass",
      "builtin": true,
      "outputs": [
        {
          "name": "mass",
          "metric": "total"
        }
      ],
      "canvas_position": {
        "x": 740,
        "y": 100
      }
    }
  ],
  "objectives": [
    {
      "id": "obj_001",
      "name": "Total mass (grams) - minimize for longer flight time",
      "direction": "minimize",
      "weight": 1.0,
      "source": {
        "extractor_id": "ext_001",
        "output_name": "mass"
      },
      "target": 4000,
      "units": "",
      "canvas_position": {
        "x": 1020,
        "y": 100
      }
    },
    {
      "id": "obj_002",
      "name": "First natural frequency (Hz) - avoid rotor resonance",
      "direction": "maximize",
      "weight": 1.0,
      "source": {
        "extractor_id": "ext_001",
        "output_name": "fundamental_frequency"
      },
      "target": 150,
      "units": "",
      "canvas_position": {
        "x": 1020,
        "y": 200
      }
    }
  ],
  "constraints": [
    {
      "id": "con_001",
      "name": "Maximum tip displacement under 850g camera load < 1.5mm for image stabilization",
      "type": "hard",
      "operator": "<",
      "threshold": 1.5,
      "source": {
        "extractor_id": "ext_001",
        "output_name": "mass"
      },
      "penalty_config": {
        "method": "quadratic",
        "weight": 1000.0
      },
      "canvas_position": {
        "x": 1020,
        "y": 400
      }
    },
    {
      "id": "con_002",
      "name": "Maximum von Mises stress < 120 MPa (Al 6061-T6, SF=2.3)",
      "type": "hard",
      "operator": "<",
      "threshold": 120,
      "source": {
        "extractor_id": "ext_001",
        "output_name": "mass"
      },
      "penalty_config": {
        "method": "quadratic",
        "weight": 1000.0
      },
      "canvas_position": {
        "x": 1020,
        "y": 500
      }
    },
    {
      "id": "con_003",
      "name": "Natural frequency > 150 Hz to avoid rotor frequencies (80-120 Hz safety margin)",
      "type": "hard",
      "operator": ">",
      "threshold": 150,
      "source": {
        "extractor_id": "ext_001",
        "output_name": "mass"
      },
      "penalty_config": {
        "method": "quadratic",
        "weight": 1000.0
      },
      "canvas_position": {
        "x": 1020,
        "y": 600
      }
    }
  ],
  "optimization": {
    "algorithm": {
      "type": "TPE",
      "config": {
        "n_startup_trials": 10
      }
    },
    "budget": {
      "max_trials": 30
    },
    "canvas_position": {
      "x": 1300,
      "y": 150
    }
  },
  "canvas": {
    "edges": [
      {
        "source": "dv_001",
        "target": "model"
      },
      {
        "source": "dv_002",
        "target": "model"
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      {
        "source": "dv_003",
        "target": "model"
      },
      {
        "source": "dv_004",
        "target": "model"
      },
      {
        "source": "model",
        "target": "solver"
      },
      {
        "source": "solver",
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      },
      {
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        "target": "obj_001"
      },
      {
        "source": "ext_001",
        "target": "obj_002"
      },
      {
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        "target": "con_001"
      },
      {
        "source": "ext_001",
        "target": "con_002"
      },
      {
        "source": "ext_001",
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      },
      {
        "source": "obj_001",
        "target": "optimization"
      },
      {
        "source": "obj_002",
        "target": "optimization"
      },
      {
        "source": "con_001",
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        "source": "con_002",
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      {
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    ],
    "layout_version": "2.0"
  }
}