Study On Vehicle To Two Wheeler Collisions Accident And The Damage Of Rider

According to the vehicle-two wheeler accidents frequently happen in our country,the two-wheeler cyclist is a vulnerable group in road traffic accidents.Besides,most of vehicle-two wheeler crash accidents happen to young adults who are the main labor forces of their families and our society.Thus the great economic losses and mental injuries that the above traffic casualties cause have a direct impact on the economic development and social stability in China.Therefore,the research on protecting cyclist is an indispensable part of constructing a harmonious society.At first,this paper makes a research on investigation methods of vehicle-two wheeler crash accidents.Based on the practice experience and previous research results,the writer designs a complete in-depth investigating accident process and elaborates on each investigating procedure combining true accident cases.based on the data from 267vehicle-two wheeler crash accident cases collection Ningbo by CIDAS,and statistical analysis was used to statistically analyze the characteristics of accidents and the damage distribution of cyclists.Logistic regression model was used to study the correlation between individual variables and dependent variables.establishing the basic model and the model with interaction effect,the correlation between the accident feature parameter and the severity of the injury was obtained.Then,PC-Crash is used to perform accident reconstruction to obtain data of injury to various parts of the body of a cyclist in a vehicle two wheel collision accident.The reconstruct flow is first proposed,and it is demonstrated with a real vehicle-two wheeler accidents.the simulation model of vehicle-two wheeler collision is established which the accuracy of the model and the feasibility of the simulation method are verified by comparing the simulation data with the actual data.In order to study the characteristics of injury in different parts of vehicle-two wheeled cyclistFinally,to study the injury characteristics of various parts of the vehicle-electric two wheeled cyclist,the typical side impact tests of the vehicle-electric two wheeler are designed based on the influencing factors of the vehicle model,vehicle speed,and impact position.The simulation test is divided into 48 groups.The influence of various factors on the injury index of the bicyclist and the distribution of damage in various parts of the human body are studied.The indexes studied include the head HIC15,the acceleration of thorax,and the shear force of the left femur and the left lower leg.Through the analysis and discussion of the simulation results,it was concluded that in the human head injury,when the SUV speed is 65km/h,"b"(right front part of the vehicle and the angle between the two cars is 90°)represents the collision position,and the cyclist has the largest head injury value;in the chest injury,the Sedan speed is 45km/h.When the collision position is "a"(right front part of the vehicle and the angle between the two cars is 45°),the cyclist's thorax is most seriously injured;in the left femur injury,when the SUV speed is 65 km/h,"d"(left front part of the vehicle and the angle between the two cars is 90°)represents the collision position,the cyclist is subjected to the greatest shear force on the left thigh,which can cause thigh fracture.In the left lower leg injury,when the SUV speed is 45km/h and the collision position is "a",the cyclist's left lower leg is more likely to fracture.