Abstract: Vehicle body longitudinal axis at sled tests, which have been widely used to simulate the full-width
frontal impact at present, isusually parallel to sled movement direction. Therefore, occupants' motion attitude
cannot be simulated due to vehicle rotary motionin angular impact test. This paper simplifies the vehicle angular
impact,analyzes kinetic model. A new method was used to accurately determine the deflection angle of the
vehicle body and the input pulse of the sled in angular impact sled test to calculate the acceleration vectors in
vehicle body by combining with the vehicle acceleration signals of the real vehicle crash test. By comparing the
head injuries and chest injuries, the results show that improved sled test method has better simulation accuracy
than the existing sled test method.

Key words: automotive engineering, passive safety, frontal angular impact, deflection angle, input pulse, dummy injuries