Effects of pedestrian gait, vehicle-front geometry and impact velocity on kinematics of adult and child pedestrian head

Peng, YongState Key Laboratory of Vehicle NVH and Safety Technology,Université de Strasbourg,University of Strasbourg,Hunan University (author)

The objective of the study is to investigate the effects of pedestrian gait, vehicle-front geometry and impact velocity on the dynamic responses of the head. The multi-body dynamic (MBD) models were used to simulate the head responses in vehicle to pedestrian collisions with different vehicle types in terms of head-impact point measured with Wrap Around Distance (WAD), head relative velocity and impact angle. Furthermore, the distribution of the head contact point on the vehicle fronts is analysed for a comparison of the contact point with the testing areas in the EEVC headform impactor test procedures. A simulation matrix is established using five vehicle types, two mathematical models of the pedestrians represented a 50th male adult and a 6-year-old child as well as seven pedestrian gaits based on typical postures in pedestrian accidents. In order to simulate a large range of impact conditions, four vehicle velocities (30 km/h, 40 km/h, 50 km/h and 60 km/h) are considered for each pedestrian position and vehicle type. The results indicated that the pedestrian gait and vehicle-impact velocity strongly influence head-impact condition. It is obvious that due to different vehicle-front geometry, the head-impact velocity, impact angle and head-impact point could be varied as well. This study provides suggestions for different head-impact conditions of subsystem test to the front part of different passenger vehicles.

Deck, C.Université de Strasbourg,University of Strasbourg (author)
Yang, Jikuang,1948Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jiku (author)
Willinger, R.Université de Strasbourg,University of Strasbourg (author)
State Key Laboratory of Vehicle NVH and Safety TechnologyUniversité de Strasbourg (creator_code:org_t)

In:International Journal of Crashworthiness: Informa UK Limited17:5, s. 553-5611358-82651754-2111

By the author/editor: Peng, Yong; Deck, C.; Yang, Jikuang, 1 ...; Willinger, R.

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