Research on Off-position Injury of Dummy Based on AEB System

In order to analyze the off-position injury on the dummy caused by AEB system after the collision of the vehicle, this paper analyzes the AEB braking principle and the actual braking conditions of the AEB, and obtains different braking waveforms of AEB. Based on the braking waveform of AEB, the finite element is used to establish the active human model and the dummy constraints to analyze the dummy off-position injury. The results show that the larger the gradient of the brake trapezoidal wave, the faster the response of the dummy forward displacement, and the maximum forward displacement of the dummy is positively correlated with the time history. The larger the maximum displacement, the more serious the dummy off-position collision injury; The off-position injury is positively correlated with the maximum brake deceleration duration. The maximum off-position risk is increased because of the two-stage brake. The off-position phenomenon caused by the AEB brake condition, increases the collision injury of the occupants of different positions and needs to match the corresponding restraint system, so as to meet the collision protection for off-position in different postures.