Abstract:

This paper aims to investigate the effects of active force of neck muscle on pedestrian head injury under different impact speeds and pedestrian gaits. Firstly， the head-neck part of LSTC pedestrian model is replaced by HHNM III head-neck model developed by Hunan University to form a hybrid pedestrian dummy model， whose effectiveness is then verified by cadaver test data. Then a simulation is conducted to analyze the effects of pedestrian gaits， i.e. struck leg backward （SLB） and struck leg forward （SLF） on pedestrian head injury under different impact speeds. The results show that in low-speed collisions， the neck muscles will reduce the amplitude of head movement， but increase the risk of head injury， the pedestrian head injury with a gait of SLB is severer than that with SLF， and the neck muscles have smaller effects on head injury in high-speed collisions.

Key words: pedestrian collision accident, pedestrian head injury, neck muscle active force