mpm.json

{
  "title" : "3D Dam break",
  "mesh": {
    "mesh": "mesh.txt",
    "entity_sets": "entity_sets.json",
    "cell_type": "ED3H8",
    "check_duplicates": true,
    "isoparametric": false,
    "io_type": "Ascii3D",
    "node_type": "N3D",
    "boundary_conditions": {
        "velocity_constraints": [
            {
                "nset_id" : 0,
                "dir": 0,
                "velocity": 0.00
            },
            {
                "nset_id" : 1,
                "dir": 1,
                "velocity": 0.00
            },
            {
                "nset_id" : 2,
                "dir": 2,
                "velocity": 0.00
            }
        ]
    }
  },
  "particles": [
    {
      "generator": {
        "check_duplicates": true,
        "location": "particles.txt",
        "io_type": "Ascii3D",
        "pset_id": 0,
        "particle_type": "P3D",
        "material_id": 0,
        "type": "file"
      }
    }
  ],
  "materials" : [
    {
    "id" : 0,
    "type" : "Newtonian3D",
    "density" : 1000.0,
    "bulk_modulus" : 1.0E+6,
    "dynamic_viscosity" : 0.5
    }
  ],
  "external_loading_conditions" : {
    "gravity": [ 0.0, 0.0, -9.814]
  },
  "analysis" : {
    "type" : "MPMExplicit3D",
    "stress_update" : "usf",
    "uuid": "dambreak-3d",
    "dt" : 1.0E-4,
    "nsteps" : 20000,
    "resume" : {
      "resume": false,
      "uuid": "dambreak-3d",
      "step" : 5
    }
  },
  "post_processing" : {
    "path" : "results/",
    "output_steps" : 50
  }
}