{

  "Output Folder": "demo_tire_rig",


  "Physical Properties of Fluid":
  {
    "Density":                2500,
    "Viscosity":              10.0,
    "Body Force":             [0.0, 0.0,  0.0],
    "Gravity":                [0.0, 0.0, -9.81],
    "Surface Tension Kappa":   0.0,
    "Characteristic Length":   1.0
  },

  "SPH Parameters":
  {
    "Method":                        "WCSPH",  //WCSPH, IISPH, I2SPHH
    "Kernel h":                       0.025,
    "Initial Spacing":                0.025,
    "Epsilon":                        0.001,
    "Maximum Velocity":               1.0,
    "XSPH Coefficient":               0.5,
    "Shifting Coefficient":           0.0,
    "Density Reinitialization":       100000000,
    "Conservative Discretization":    true

  },

  "Time Stepping":
  {
    "Adaptive Time stepping":        false,
    "Beta":                          0.0,
    "CFL number":                    0.2,
    "Fluid time step":               1e-4,
    "Solid time step":               1e-4,
    "Maximum time step":             1e-4,
    "End time":                      2,
    "Write frame per second":        50
  },

  "Elastic SPH":
  {
    "Poisson ratio":                0.3,
    "Young modulus":                2.0e6,
    "Artificial stress":            0.0,
    "Artificial viscosity alpha":   0.5,
    "Artificial viscosity beta":    0.0,
    "I0":     0.04,
    "mu_s":   0.7,
    "mu_2":   0.7,
    "particle diameter":     0.001,
    "frictional angle":      0.0,  //3.1416, 1.5708, 0.5236
    "dilate angle":          0.0,
    "cohesion coefficient":  0.0
  }
}

Add an input JSON file for the SPH terrain node for the co-simulation
Add an input JSON file for the SPH terrain node for the co-simulation
