Abstract:

In order to establish an accurate model of debris kinetic behavior in vehicle crash which is easy to apply for practical traffic accident reconstruction, the criterions of bounce, slide and rollslide after the collision of the vehicle debris with the ground were proposed based on the modern contact dynamics theory, combined with the properties of the debris material, a generalized kinetic behavior model of the debris in vehicle collision was built. The validity of the behavior model was verified by the simulating crash test device developed by authors. The results show that the relative error between the value calculated by the behavior model and the tested value is less than 7%. The built model makes up the deficiency of the existed models, its application is more specific and accurate than existed ones, expanding the application potential of vehicle crash debris for traffic accident reconstruction.

Key words: engineering of communications and transportation safety, accident reconstruction, debris, kinetic criterion