{
  "geometry": {
    "mesh": "bar.msh",
    "surface_selection": { "threshold": 1e-6 }
  },
  "materials": { "type": "LinearElasticity", "E": 20000, "nu": 0.3 },
  "boundary_conditions": {
    "dirichlet_boundary": [ { "id": 1, "value": [0, 0, 0] } ],
    "neumann_boundary": [ { "id": 3, "value": [0, -1, 0] } ]
  },
  "space": { "discr_order": 1 },
  "solver": { "linear": { "solver": "Eigen::SparseLU" } },
  "output": {
    "json": "cantilever-stats.json",
    "paraview": { "file_name": "cantilever.vtu" }
  }
}