Influence Law of Pedestrian WAD in Vehicle/Pedestrian Collisions

Based on the coupling of PC-Crash and embedded MADYMO, influence laws of pedestrian¿s head WAD involved in a vehicle/pedestrian collision are analyzed by modeling vehicle/pedestrian multi-body system and selecting main factors influencing on pedestrian¿s head contact location on vehicle body surface as independent variables for simulation tests. Various influencing factors and laws of pedestrian WAD as well as vehicle impact speed thresholds under different collision circumstances are in depth researched. Furthermore, mathematical relation curves and empirical formulae between the pedestrian WAD and vehicle impact speed are derived from regression analyses. The comparisons of simulation results with staged and real world vehicle/pedestrian impacts have verified a good harmony and consistency between them; moreover, these regression models may be used to assess vehicle/pedestrian impact speed. The results in this paper will be of practicality in technical appraisal of vehicle/pedestrian collisions.