Vehicle collision accident reappearance method based on phototopography and exterior profile deformation of car body

Establishing the outer contour of the vehicle and the accident site modification thereto; vehicle accident and its modification directed to the same model vehicle intact and photogrammetry: A traffic measurement and photographic art based on the outer contour of the deformed body car collision reproducing method step for the same model vehicle outer contour and good dimensional numerical model; comparison reference model and deformation analysis of the numerical model, and obtains the feature point deformation angle deformation; scene environment and establish the deformed part of the vehicle involved in the accident to the corresponding local FEM model; optimization through multiple iterations, obtained under conditions set speed and the impact angle, the results of numerical simulation of the feature points coincides with the real collision deformation measurements, to accurately determine the vehicle speed and the angle of collision accident occurrence time. The present invention may be implemented at the accident scene where the reproduction information, effectively improving the efficiency of accident reconstruction, more objective and intuitive.