Research On The Source And Correlation Of Human-Body Injury In Vehicle-Pedestrian Accident

According to the actual situation of pedestrian casualties in traffic accidents in China,the research on such accidents based on computer reproduction technology is relatively lagging.This paper will propose the car-to-human collision accident reproduction process based on computer simulation technology and study the damage characteristics of pedestrians.In order to obtain the human injury data of the real accident case,it is necessary to reproduce the accident by means of PC-Crash.After proposing a general process based on the PC-Crash reproduction accident,the process is demonstrated with a real vehicle-to-person collision accident.A total of 64 accidents involving pop-up collisions in car-pedestrian collision accidents were selected.The damage data of each part was collected after PC-Crash reproduction.The results showed that there was significant difference between the head injury index HIC15 and the chest injury index 3ms acceleration value.Statistically significant,there is a high correlation between pedestrian head injury and pedestrian chest injury,and the correlation coefficient is 0.765,which is significantly higher than the correlation coefficient between other injury sites,indicating that between head injury and chest injury.It is the most relevant.Based on the data obtained from 57 cyclists and 64 pedestrian accidents,the differences between pedestrians and cyclists in traffic accidents and the source of damage were compared.It was found that the risk of pedestrian head injury was higher than that of the rider.Risk of injury,but the source of the damage is different The head injury of the rider is caused by the impact of the vehicle.The head injury of the pedestrian is caused by the vehicle collision when the vehicle speed is higher than 30km/h.When the vehicle speed is lower than 47km/h,the risk of chest injury of the rider is greater than the risk of chest injury of the pedestrian.However,when the vehicle speed is greater than 47km/h,the risk of chest injury of the pedestrian is greater than the risk of chest injury of the rider.By comparing the differences between the two injuries,it provides support for pedestrian injury researchers to gain experience and learn from the results of the two-wheeler research.In order to study the difference of pedestrian damage in different vehicle-to-person collision accidents,based on PC-Crash,40 groups and 20 groups of vehicle frontal collision experiments were designed under the condition of reaction time and no reaction time,and the damage data of each part was collected.The comparison found that the correlation between the pedestrian head injury index HIC15 and the chest injury index 3ms acceleration value of the four models is statistically significant,that is,there is a high correlation between the pedestrian head injury and the pedestrian chest injury,and The value is significantly higher than the correlation coefficient between the other lesions,indicating that the head injury and chest injury are the most relevant.It also shows the influence of vehicle type and driver response time on the source and correlation of pedestrian damage.It is found that the reaction time and the shape of the front head have an impact on the source and correlation of human injury,but the influence of reaction time is weak·This paper compares the sources and correlations of pedestrian damage in car-to-person collision accidents and related conclusions,which has certain value for improving the level of traffic accidents and the determination of responsibility.