PRACA ORYGINALNA
RECONSTRUCTION OF THE COLLISION OF MANY CARS CONSIDERED AS THE SYSTEM OF MATERIAL POINTS
Jerzy Wicher 1  
 
 
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Vehicle Safety Laboratory, Automotive Industry Institute Jagiellońska 55, 03-301 Warsaw, Poland, Polska
AUTOR DO KORESPONDENCJI
Jerzy Wicher   

Vehicle Safety Laboratory, Automotive Industry Institute Jagiellońska 55, 03-301 Warsaw, Poland, Korotyńskiego 21 m 77, 02-123, Warszawa, Polska
Data publikacji: 29-03-2019
Data nadesłania: 13-02-2019
Data ostatniej rewizji: 13-03-2019
Data akceptacji: 18-03-2019
 
The Archives of Automotive Engineering – Archiwum Motoryzacji 2019;83(1):123–131
SŁOWA KLUCZOWE
DZIEDZINY
STRESZCZENIE ARTYKUŁU
In the situation of high intensity of motor vehicle traffic, collisions or accidents at road intersections often have the form of a collision of multiple cars. The reconstruction of such a road incident is often carried out as an attempt to estimate the velocities of individual cars, especially the velocity of the vehicle that caused the collision. In the analysis of motion of a larger number of vehicles, it may be sufficient to assume that they can be adequately represented by a system of material points with their mass values being known. In such a case, it may be possible to determine the velocity values necessary to assess the safety level and to estimate the degree of responsibility of individual drivers on the grounds of some elementary equations describing a system of material points. The objective of this article is to show, with a collision of three cars being taken as an example, that the determining of the velocity of the vehicle that caused the collision comes down to solving a few simple algebraic equations. Before the reconstruction of a road incident is commenced, data are collected from the incident site. These data constitute the basic sources of evidence. Unfortunately, they may be burdened with a wide uncertainty margin. Therefore, adequate reliability of such data is often decisive for the obtaining of a correct result of the reconstruction. The article shows a possibility of improving the reliability of such data by using relative sensitivity factors to identify the parameters of the road incident under consideration that have the strongest influence on the final calculation result. This means that the values of such parameters should be estimated with the greatest possible accuracy because they have the strongest impact on the uncertainty of assessment of the traffic situation being examined.
 
REFERENCJE (16)
1.
Bartlett W., Fonda A. Evaluating Uncertainty in Accident Reconstruction with Finite Differences. SAE Technical Paper 2003-01-0489, 2003, https://doi.org/10.4271/2003-0....
 
2.
Bartlett W., Wright W., Masory O., Brach R. et al. Evaluating the Uncertainty in Various Measurement Tasks Common to Accident Reconstruction. SAE Technical Paper 2002-01-0546, 2002, https://doi.org/10.4271/2002-0....
 
3.
Brach R., M. Uncertainty in Accident Reconstruction Calculations. SAE Transactions, vol. 103, Journal of Passenger Cars, 1994: 909-916, https://doi.org/10.4271/940722.
 
4.
Dworecki Z., Fiszer A., Łoboda M., Przybył J. Funkcja wrażliwości względnej i jej zastosowanie w inżynierii rolniczej (The relative sensitivity function and its application in agricultural engineering). Inżynieria Rolnicza, 2007; 96(8).
 
5.
Fonda A. The Effects of Measurement Uncertainty on the Reconstruction of Various Vehicular Collisions. SAE Technical Paper 2004-01-1220, 2004, https://doi.org/10.4271/2004-0....
 
6.
Frank P. M. Introduction to System Sensitivity Theory. Academic Press, 1978.
 
7.
Guzek M., Lozia Z. Possible Errors Occurring During Accident Reconstruction Based on Car “Black Box” Records. SAE Technical Paper 2002-01-0549, 2002,https://doi.org/10.4271/2002-0....
 
8.
Guzek M., Lozia Z. Uncertainty Study of Road Accident Reconstruction – Computational Methods. SAE Transactions. 2005; 114, 1342-1356, https://doi.org/10.4271/2005-0....
 
9.
Guzek M. Uncertainty in calculations at the reconstruction of road accidents. Proceedings of the Institute of Vehicles / Warsaw University of Technology, 2016, 109(5): 117-139, https://doi.org/10.4271/2005-0....
 
10.
Nalecz A., Wicher J. Design Sensitivity Analysis of Mechanical Systems in Frequency Domain. Journal of Sound and Vibration, 1988; 120(3): 517-526.
 
11.
Prochowski L., Unarski J., Wach W., Wicher J. Podstawy rekonstrukcji wypadków drogowych (Fundamentals of the reconstruction of road accidents). WKiŁ, Warszawa, 2008.
 
12.
Tortorelli D. A., Michaleris P. Design sensitivity analysis: Overview and review. 2007: 71-105, https://doi.org/10.1080/174159....
 
13.
Tubergen R. The Technique of Uncertainty Analysis as Applied to the Momentum Equation for Accident Reconstruction. SAE Technical Paper 950135, 1995, https://doi.org/10.4271/950135.
 
14.
Tykocki J., Jordan A., Żelazny D. Badanie wrażliwości układów wieloparametrycznych (Investigation of the sensitivity of multi-parametric systems). Poznań University of Technology Academic Journals: Electrical Engineering. 2016; 86, https://doi.org/10.21008/j.150....
 
15.
Wach W. Structural reliability of road accidents reconstruction. Forensic Science International, 2013; 228(1-3), 10 May 2013: 83-93, https://doi.org/10.1016/j.fors....
 
16.
Wicher J. Bezpieczeństwo samochodów i ruchu drogowego (The safety of motor vehicles and road traffic). 3rd edition, expanded, WKiŁ, Warszawa, 2012.
 
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