Modeling And Analysis Of Electric Two-Wheel Vehicle(E2W) Collision With Car

Electric two-wheel vehicles(E2W)have become newly popular emission-free transportation tools in China given its convenience and economy.Together with bicyclists or motorcyclists,E2 W riders are also considered as vulnerable road users(VRU)due to their high injury risk in collision with cars on the road.First a literature review was performed,to analyze the background and importance of two-wheelvehicle-car crash studies in China.The above all goal of the project is to gain evolved knowledge about kinematical responses and injury patterns of E2 W riders when colliding with cars based on computational investigation.A multi-body E2W-car model was developed consisting of a rider,an E2 W and a small-sized sedan to simulate the rider kinematics in a collision event.Model validation was performed using detailed information of a typical realworld E2 W collision accident in China.The multi-body model was then adapted to represent different combinations of rider anthropometries and two-wheeled vehicle models.Following this,a sensitivity analysis was conducted aimed to analyze how impact configurations affect E2 W riders' responses in a collision.Using a multibody model of a bicycle of previous studies,the same sensitivity analysis was conducted and its results were compared to the results gained with the E2 W.Main conclusions from the gained sensitivity analysis about injury patterns and parameter influence were summarized.The research belongs to a broader project supported by one of the largest car manufactures.It is anticipated to provide references to subsequence finite element studies and injury mechanism analysis.