| { |
| "engine": "Project Chrono / PyChrono", |
| "engine_version": "9.0.1", |
| "experiment": "STEP-derived wheel rolling on a flat floor under a fixed speed controller", |
| "material_density_kg_m3": 7800.0, |
| "gravity_m_s2": 9.81, |
| "contact_friction": 1.5, |
| "initial_axle_m": [-0.5, 0.05, 0.0], |
| "target_spin_rad_s": -6.0, |
| "spin_ramp_s": 0.3, |
| "speed_controller_gain_N_m_s_rad": 0.05, |
| "maximum_drive_torque_N_m": 0.1, |
| "settling_s": 0.5, |
| "minimum_rolling_distance_m": 0.2, |
| "maximum_relative_spin_error": 0.1, |
| "minimum_floor_contact_fraction": 0.5, |
| "duration_s": 2.0, |
| "time_step_s": 0.0005, |
| "required_relative_axle_height_variation_reduction": 0.7, |
| "maximum_relative_mass_change": 1e-6, |
| "maximum_envelope_change_mm": 1e-6, |
| "maximum_external_added_mm3": 0.0001, |
| "maximum_bore_intrusion_mm3": 0.0001, |
| "maximum_hub_missing_mm3": 0.0001 |
| } |
|
|
