{
  "engine": "Project Chrono / PyChrono",
  "engine_version": "9.0.1",
  "experiment": "STEP-derived wedge lifting and releasing a spring-loaded roller follower",
  "material_density_kg_m3": 7800.0,
  "gravity_m_s2": 9.81,
  "contact_friction": 0.15,
  "wedge_initial_cad_origin_m": [-0.3, 0.0, 0.0],
  "follower_radius_m": 0.05,
  "follower_mass_kg": 4.0,
  "follower_reference_height_m": 0.06,
  "follower_spring_stiffness_N_m": 1000.0,
  "push_force_N": 11.0,
  "push_duration_s": 1.5,
  "reverse_force_N": 8.0,
  "duration_s": 3.0,
  "time_step_s": 0.0005,
  "target_follower_height_m": 0.12,
  "minimum_lift_gain_m": 0.01,
  "maximum_retracted_wedge_x_m": -0.55,
  "maximum_returned_follower_height_m": 0.08,
  "maximum_relative_mass_change": 1e-6,
  "maximum_envelope_change_mm": 1e-6,
  "maximum_external_added_mm3": 0.0001,
  "maximum_mount_missing_mm3": 0.0001
}