{
  "TopologyOptimizationExample": "Lshape",
  "//": "user defined project name",
  "material": {
    "E": 2.1e11,
    "poisson_ratio": 0.3,
    "thermal_conductivity": 43,
    "//unit": "W/(m*K)",
    "thermal_expansion_coefficient": 1.21e-5,
    "//unit": "1/K"
  },
  "topology": {
    "max_loop": 100,
    "volfrac": 0.5,
    "penal": 3.0,
    "r_min": 1.05,
    "T_ref": 312,
    "T_limit": 3996.52,
    "R_E": 28,
    "R_lambda": 28,
    "R_beta": 0
  },
  "model": {
    "defined_model": {
      "path": "path/to/user_defined_model.txt", "//": "used only when the model is not passed to the interface!"
    }
  },
  "mechanical_boundary_condition": {
    "NBC": [
      {
        "min": [
          0,
          1,
          0
        ],
        "max": [
          1,
          1,
          0
        ],
        "val": [
          0.0,
          0.0,
          -1e10
        ]
      }
    ],
    "DBC": [
      {
        "min": [
          0,
          0,
          1
        ],
        "max": [
          1,
          0.5,
          1
        ],
        "dir": [
          1,
          1,
          1
        ]
      }
    ]
  },
  "thermal_boundary_condition": {
    "NBC": [
      {
        "min": [
          0.5,
          0.2,
          0.2
        ],
        "max": [
          0.5,
          0.2,
          0.2
        ],
        "heat_flux": 3.5,
        "//unit": "W"
      },
      {
        "min": [
          0.5,
          0.8,
          0.2
        ],
        "max": [
          0.5,
          0.8,
          0.2
        ],
        "heat_flux": 3.5,
        "//unit": "W"
      }
    ],
    "DBC": [
      {
        "min": [
          0,
          0,
          1
        ],
        "max": [
          1,
          0.5,
          1
        ],
        "temperature": 312,
        "//unit": "K"
      }
    ]
  }
}