The Uncertainty Analysis Of Pedestrian-vehicle Reconstruction Results

Following the development of the automobile industry and the the traffic mode.The quantity of vehicle-pedestrian crash accidents as well as the degree of injury are at a fairly high level at all time?This is not only because of the randomness and volatility of pedestrian movement,but also because of the uneven makings of a driver.The analysis and reconstruction of the accident is the main basis for responsibility confirmation.Soimprove the reliability of analysis has great significace in theory and application.This paper focuses on analyzing the uncertainty of vehicle-accident reconstruction?s results.First,the uncertainty parameters of model are analyzed by the method of uncertainty analysis,and obtain changes of parameter sensitivity and reproducibility uncertainty.Secondly,with the experimental platform of PC-Crash and orthogonal experimental method,the influence of the relative factors on the throwing distance and horizontal rotation is analyzed.Obtaining the significant factors and the influence performance of these factors are analyzed.Studies have shown that: The influence of different probability distribution types on the representation results is very small;The increase of parameters uncertainty will increase the sensitivity of parameter;The variation of significant influence factors on throwing distance is different,and the throwing distance of blunt is longer than that of long-head car;The increase of significant influence factors lead to greater level of horizontal rotation,and the horizontal rotation of blunt is longer than that of long-head car.