A Study On Car And Two-wheeled Motorcycle Collision Accident Analysis And Riders' Injury

With the rapid development of the social economy,the number of motor vehicles in the country has grown rapidly.Two-wheeled motorcycles have gradually become one of the ways people travel.In recent years,the number of accidents involving two-wheeled vehicles has continued to grow,with collisions between automobiles and two-wheeled motorcycles being an important type of road traffic accidents.Since the body of the two-wheeled motorcycle rider is directly exposed and there is no body protection,the probability of death or injury caused by the collision is extremely high.In addition,the mobility of two-wheeled motorcycles is stronger than that of other two-wheeled vehicles,resulting in a more complicated situation after the collision and the diversity of injuries caused by the occupants.This dissertation uses the research methods of accident statistics analysis and computer simulation.It mainly studies the characteristics and general laws of collision accidents between automobiles and two-wheeled motorcycles.The in-depth study of the characteristics of rider injuries caused by such accidents and the factors influencing the injuries of riders not only helps to improve the efficiency of accident reproduction,but also helps The development of forensic appraisal work and the prevention of accidents can also provide reference for the development of rider injury protection.Accident statistics analysis section: selecting the accidents of cars and two-wheeled motorcycles in Chengdu in recent years as the research object,through the collection of 2354 traffic accidents involving two-wheeled motorcycles in the traffic police database of Chengdu area from 2011 to 2015,to sort out and statistically analyze and summarize the characteristics of the traffic accidents of the two-wheeled motorcycles in the region and the distribution characteristics of the injuries to the riders.The computer simulation analysis is divided into two parts: using the multi-body dynamics analysis software PC-Crash to simulate and reconstruct a typical automobile-two-wheeled motorcycle accident case,to reproduce the dynamic response process of the human body in the accident,and simulate results are compared with the real accident case data to verify the reliability of the model.Based on the reconstruction model,the influences about collision type,collision angle,and the vehicle model on the damage of the rider are analyzed.Finally,the front of Sedan-two-wheeled motorcycle is analyzed.In the collision accident,twelve factors are selected such as the speed of car,the speed of two-wheeled motorcycle,the position of the collision,the inclination of the windscreen,the adhesion coefficient of the ground,the quality of the two-wheeled motorcycle,the friction coefficient of the rider and the two-wheeled motorcycle,the rider's sitting height,the weight of the rider,hood front edge from the ground height,the length of the hood,the friction coefficient between the rider and the car,and the orthogonal test are used to study the order of the weights of different factors affecting the rider injury in the crash between the car and the two-wheeled motorcycle.Derive the significance factor that affects rider's injury.Finally,a simulation experiment was conducted using the control variable method to study the influence of these significant factors on injury the head of rider.The results showed that the car speed,the rider's sitting height,hood front edge from the ground height,and the speed of the two-wheeled motorcycle were the significant influencing factors.The car speed and the rider's sitting height and hood front edge from the ground height are important factors affecting the head injury of the rider;the HIC value of the rider's head and the head collision speed increase with the increase of the car's speed.The head-collision time of the vehicle occupant advances as the car speed increases.As the rider's sitting height increases,the rider's head collision speed is negatively correlated with the rider's sitting height,and the rider's head collision time is positively correlated with the rider's sitting height.The rider's head HIC value and head crash speed both decrease with increasing hood front edge from the ground height,and the rider's head collision time increases with hood front edge from the ground height.The rider's head HIC value and head collision speed gradually decreased with the increase of the speed of the two-wheeled motorcycle,and the changing trends of the three different rider's sitting heights were similar.The rider's head collision with the car time increases with the speed of two-wheeled motorcycles.