| With the rapid development of automobile industry,the incidence rate of traffic accidents are also increasing,especially caused by the collision between cars and pedestrians.Therefore,it is very important to make a scientific and accurate identification of the accident.Traffic accident reconstruction is an important means to analyze the causes of accidents and improve the efficiency,fairness and accuracy of traffic accident handling,and provide scientific decision-making basis for the transportation department.First of all,a large number of traffic accident reconstruction papers were read,the research background and the research status at home and abroad were introduced in detail.Secondly,this paper described the research methods of pedestrian traffic accidents from three aspects,including field investigation,site visit and post survey,and the accident case is introducted in detail.Then,detailed introduces the method for determining the instantaneous speed of collision accident reconstruction,And determinedthespeed of the vehicle and the pedestrian were 60km/h and 1.5m/s in the accident case,According to the accident data,the relationship between the pedestrian,the vehicle and the environment was established based on the finite element model of the vehicle and THUMS model,And completed the accident simulation of finite element simulation model structures,andcompleted the construction of the finite element simulation model of accident reconstruction;At last,the biomechanics of human body injury was expounded,and the injuries of human being wereanalyzed,and the deformation of the accident vehicle,pedestrian’s falling posture and pedestrian injurieswerecompared,the resultshowed that the deformation of the vehicle and the pedestrian’s falling posture in the reconstruction simulation are consistent with the accident case,and the injury characteristics of Pedestrian head,chest,upper limbs,lower limbs and spinal are also similar to the "Analysis report of forensic autopsy report ",which proved that the finite element method is feasible in Traffic accident reconstruction study.This article elaborated the traffic accident investigation research method,and establishedthe finite element accident reconstruction process,and summarized the injuries analysis method based on THUMS model,Which provided a new idea for the study of accident reconstruction.This method is applicable to various types of traffic accidents,with good promotion value and universality. |
