Injuries assessment of motorcyclist in traffic accidents with a sedan car using numerical simulation

Besides cyclist and pedestrian, motorcyclist also is vulnerable road users (VRU) because of lack of safety factors. Considering the traffic situation at present of developing countries which represent the number of motorbikes, the dangerous traffic accidents regarding motorcyclist always higher than others. Particularly, motorbike, which main vehicle in Vietnam, combine with the increase of the number of cars has created many problems about the crash between car and motorcyclist and the level of user’s injury. Hence, the main aim of this study is that researching how car crashes influence Vietnamese human body in a traffic accidence, in particular, human head because it is the most important part in the whole body. Human Body Model is Dummy Hybrid III, but it is scaled down to average size of Vietnamese male named V-Dummy while the finite element car models used in this research are already published. Furthermore, motorbike finite element model is completely built in new. Then, V-Dummy is changed the posture from pedestrian to driver on motorbike to conduct the crash simulation model in different cases (velocity and impact angle) via LS-Dyna software. The results are taken out via LS- prepost and processed to predict easier the head injury of motorcyclist. Based on the databases, the dummy head was frequently hit by the car’s windshield during the primary impact and the HIC of impact angle, the motorcyclist suffers higher HIC than 30 show the acceleration of the head corresponds to the speed of impactor. At 0o of impact angle. The velocity of motorbike does not cause a significant effect at low velocities from 20 km/h to 40 km/h while there is a considerable higher HIC at 50 km/h of car’s velocity when motorcyclist go at 30 km/h of velocity instead of 0 km/h of velocity.