{
  "engine": "Project Chrono / PyChrono",
  "engine_version": "9.0.1",
  "experiment": "CAD-derived coupler in a motor-driven planar four-bar linkage",
  "material_density_kg_m3": 7800.0,
  "ground_pivot_spacing_m": 0.12,
  "crank_length_m": 0.05,
  "rocker_length_m": 0.07,
  "initial_crank_angle_deg": 30.0,
  "crank_speed_rad_s": 1.0471975511965976,
  "target_x_m": [0.054, 0.062],
  "target_y_m": [0.074, 0.082],
  "maximum_target_time_s": 1.0,
  "minimum_motor_rotation_rad": 2.0,
  "maximum_joint_closure_error_m": 0.00005,
  "duration_s": 2.1,
  "time_step_s": 0.001,
  "maximum_relative_mass_change": 1e-6,
  "maximum_envelope_change_mm": 1e-6,
  "maximum_pivot_center_shift_mm": 1e-6,
  "maximum_pivot_bore_intrusion_mm3": 0.0001
}