seed = 1.0
model solid_mechanics_model_cohesive [

    material elastic [
        name = linear
        rho = 2750.0 # Density (kg/m3)
        E = 275.0e9  # Young's module (Pa)
        nu = 0.3
        finite_deformation = true
    ]

    material cohesive_linear [
        name = insertion
        sigma_c = 300.0e6 uniform [-1e6, 1e6] # critical stress (Pa)
        G_c = 100.0 # Fracture energy (N/m)
        beta = 0.
        penalty = 1e11
    ]
]