Abstract:

In order to study the type of neck sports injury of the passenger in the front passenger seat of a vehicle during the rollover process， LS-Dyna software is used to simulate the slope rollover， platform vehicle rollover and spiral rollover process， analyze the neck force and moment response of the passenger during the rollover process， and judge the neck injury state of the passenger. Based on the neck force and moment， a hypothesis is established to judge the neck posture of the occupant at a certain moment， which can reproduce the motion posture of the dummy without recording the dummy’s motion in the test. The slope rollover test of a vehicle is carried out to verify the accuracy of the slope rollover simulation results. The analysis results show that the neck movement state of the passenger in the process of rollover can be accurately judged by combining the response of neck force and neck moment， and it is concluded that the contact collision between the head of the passenger and the vehicle body has an important impact on the neck injury of the passenger in the process of rollover.

Key words: automotive engineering, rollover, analogue simulation, neck injury, neck torque, neck force, motion posture