{
  "engine": "Project Chrono / PyChrono",
  "engine_version": "9.0.1",
  "experiment": "STEP-derived plate cam against a spring-loaded roller follower",
  "material_density_kg_m3": 7800.0,
  "contact_friction": 0.1,
  "target_rotation_speed_rad_s": 1.0,
  "speed_controller_gain_N_m_s_rad": 5.0,
  "maximum_motor_torque_N_m": 5.0,
  "initial_cam_angle_rad": -0.8,
  "follower_radius_m": 0.01,
  "follower_density_kg_m3": 1000.0,
  "follower_reference_y_m": 0.115,
  "follower_preload_N": 2.0,
  "follower_spring_stiffness_N_m": 1000.0,
  "high_follower_y_m": 0.128,
  "minimum_high_dwell_s": 0.2,
  "acceleration_smoothing_s": 0.02,
  "required_relative_acceleration_reduction": 0.1,
  "minimum_mean_rotation_speed_rad_s": 0.95,
  "duration_s": 1.8,
  "time_step_s": 0.0005,
  "maximum_relative_mass_change": 1e-6,
  "maximum_envelope_change_mm": 1e-6,
  "maximum_external_added_mm3": 0.0001,
  "maximum_base_rim_missing_mm3": 0.0001,
  "maximum_hub_missing_mm3": 0.0001,
  "maximum_bore_intrusion_mm3": 0.0001
}