Non-collinear low velocity rear end (LVRE) collision human kinematics have not previously been studied. Occupant head and neck motion during twenty similar non-collinear (15 and 30 deg angle) left rear end collisions were analyzed for five male test subjects alternately positioned in the left and right front seats of the struck vehicle. Displacement-time and acceleration data for occupant, seat, and vehicles were determined by 3D motion analyses and linear accelerometer outputs. The dynamics of the struck vehicle at 6.0 to 9.3 kph (3.8 to 5.8 mph) delta-V showed an initial period of yaw, even when the rear tires did not lose traction with the pavement. The brief yaw seen during the 15 degree impacts was accompanied by early relative rightward movement of the vehicle's seat and seatback behind the stationary test subject; the subjects subsequently engaged the left region of the seatback and head restraint. A more pronounced yaw accompanied the loss of rear tire during the 30 degree tests, and resulted in occupant contact/loading further toward the left edge of the seat back and head restraint. For a given striking vehicle velocity, the impact severity in terms of head aceleration and changes in head velocity were significantly lower (p < 0.05) at vehicle impact angles of 30 degrees compared with 15 degrees. Clinically, there were only minor short-term symptoms and no long-term symptoms observed in these angled impacts.
Human kinematics during non-collinear low velocity rear end collisions
Kinematik von Fahrzeuginsassen während einer nicht-kollinearen Kollision von hinten bei niedriger Geschwindigkeit
2003
26 Seiten, 21 Bilder, 5 Tabellen, 2 Quellen
Aufsatz (Konferenz)
Englisch
Human Kinematics During Non-Collinear Low Velocity Rear End Collisions
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