Effects of bull bars on head and lower extremity injuries in vehicle-pedestrian collision
Paper in proceedings, 2012

This study aimed to investigate the effect of bull bar on injuries of pedestrian head and lower extremities based on accident reconstructions and parameters analysis. Four real-world accidents with detailed information were reconstructed via simplified vehicle-pedestrian collision models (two of which with bull bars) in MADYMO. The injury mechanisms of pedestrians caused by bull bar were analyzed, comparing with non-bull-bar vehicle. Moreover, a pedestrian-friendly bull bar was proposed considering the influence of structures of bull bars on pedestrian injuries. The results of accidents reconstructions indicated that the rigid bull bar caused high risk of injuries on lower extremities. The design parameters, such as the height and leading length of upper bull bar had remarkable influences on the injury severity of head.

multi-body dynamics

bull bar

lower extremity fracture

accident reconstruction

head injury


W. Guo

Hunan University

State Key Laboratory of Vehicle NVH and Safety Technology

Jikuang Yang

Chalmers, Applied Mechanics, Vehicle Safety

2012 3rd International Conference on Digital Manufacturing and Automation, ICDMA 2012. Guilin, Guangxi, 31 July - 2 August 2012


Subject Categories

Mechanical Engineering

Computational Mathematics

Vehicle Engineering

Areas of Advance






More information