Investigation of Influence of Impact Condition on Whole Body Trajectory of Powered Two Wheeler Driver in Collision to Car Side

In order to accurately predict the impact condition of each body region to the car surface from the initial impact condition between the car and powered two wheeler, the influence of the initial impact condition on the trajectory of the driver of the powered two wheeler was investigated by using FE collision simulations. Impact angle, and velocities of the both car and powered two wheeler were used as the parameter to define the initial impact condition. The trajectories of the Head, T1, Upper Thorax and Pelvis and velocities of these body parts were obtained from the time history of the coordinate data of the FE collision simulations. The trajectories of each body region showed following tendency: 1) The influence of impact angle, car velocity and powered two wheeler velocity on the trajectories became larger as the initial location of body parts was lower. Specifically, the Head moves approximately straight along with initial velocity direction until the Head impacts to the car. 2) Decrease of resultant velocity of each part of the body becomes small when the impact angle is different from perpendicular. The findings from this study can be used as the basic knowledge for the powered two wheeler driver’s trajectories to accurately predict the impact condition of each body region to the car surface from the initial impact condition between the car and powered two wheeler.