Adrian TODORUŢ, Nicolae CORDOȘ, Irina DUMA, István BARABÁS, Nicolae BURNETE, Radu-Mihai EFRIM, Marian-Daniel DRAGOSTE


The paper evaluates, from a physical-mathematical point of view, the stability parameters of the motor vehicles in road accidents with rollover and rolling. Such accidents occur frequently throughout the world, and current standards in this area do not provide an acceptable method of assessing the vehicle rollover stability. The stability of the vehicle during the cornering is a risky stage of the journey due to the additional factors acting on it. The main stability factor is the centrifugal force, which depends on the curvature radius of the road and is very sensitive to the vehicle speed, usually controlled by the driver. The counterforce is produced at the wheel-road interaction, where different types and conditions of the road cause a large variation of the reactions between the wheels and the roadway. Respectively, the stability and manoeuvrability of the vehicle is highly influenced. The paper mainly focuses on the reconstruction of these types of accidents, starting from the final to the initial stage. The initial values can be included in certain stability criteria which could contribute to the analysis of possible errors of the driver, the possibilities to avoid the accident and other technical conditions that can justify the evolution of the road event, respectively the possible conditions for maintaining the transverse stability in the event of overturning and the possibilities to avoid the rolling accidents. Thus, the condition of the vehicle's wheels detaching from the inside of the curve and the condition of reaching the neutral stability position are identified, after which the accident reconstruction is proceeded. It is carried out in the reverse order of the events, starting from the rolling phase, continuing with the skidding phase and the pre-slip phase.

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Altman, S.; Santistevan, D.; Hitchings, C.; Wallingford, J. et al., A Comparison of Rollover Characteristics for Passenger Cars, Light Duty Trucks and Sport Utility Vehicles. SAE Technical Paper 2002-01-0942, SAE International, 2002, https://doi.org/10.4271/2002-01-0942.

Brach, Raymond M.; Brach, R. Matthew, Vehicle Accident Analysis and Reconstruction Methods, Second Edition. Warrendale, PA, SAE International, 2011.

Bratten, T.A., Development of a Tumble Number for Use in Accident Reconstruction. SAE Technical Paper 890859, SAE International, 1989, https://doi.org/10.4271/890859.

Cristea, D., Abordarea accidentelor rutiere. Piteşti, Editura Universităţii din Piteşti, 2009.

Dahmani, H.; Chadli, M.; Rabhi, A.; El Hajjaji, A., Road bank angle considerations for detection of impending vehicle rollover. IFAC Proceedings Volumes, Volume 43, Issue 7, July 2010, Pages 31-36, ISSN: 1474-6670, https://doi.org/10.3182/20100712-3-DE-2013.00141.

Funk, J.R.; Luepke, P.A., Trajectory Model of Occupants Ejected in Rollover Crashes. SAE Technical Paper 2007-01-0742, SAE International, 2007, https://doi.org/10.4271/2007-01-0742.

Gaiginschi, R.; Drosescu, R.; Rakoși, E.; Sachelarie, A.; Filip, I.; Pintilei, M., Siguranţa circulaţiei rutiere, Vol. I. București, Editura Tehnică, 2004.

Gaiginschi, R.; Drosescu, R.; Gaiginschi, Lidia; Sachelarie, A.; Filip, I.; Pintilei, M., Siguranţa circulaţiei rutiere, Vol. II. București, Editura Tehnică, 2006.

Gaiginschi, R., Reconstructia şi expertiza accidentelor rutiere. Bucureşti, Editura Tehnică, 2009.

Han, I., Rho, K. Characteristic analysis of vehicle rollover accidents: Rollover scenarios and prediction/warning. Int. J Automot. Technol. 18(3), 2017, 451-461, https://doi.org/10.1007/s12239-017-0045-1.

Hassan, M.A.; Abdelkareem, M.A.A.; Moheyeldein, M.M.; Elagouz, A.; Tan, G., Advanced study of tire characteristics and their influence on vehicle lateral stability and untripped rollover threshold. Alexandria Engineering Journal, Volume 59, Issue 3, June 2020, Pages 1613-1628, ISSN: 1110-0168, https://doi.org/10.1016/j.aej.2020.04.008.

Jin, Z.; Li, B.; Li, J., Dynamic Stability and Control of Tripped and Untripped Vehicle Rollover. Morgan & Claypool Publishers, series Synthesis Lectures on Advances in Automotive Technology (Khajepour, A. - Editor, University of Waterloo), 2019.

Luepke, P.A.; Carter, J.W.; Henry, K.C.; Germane, G.J.; Smith, J.W., Rollover Crash Tests on Dirt: An Examination of Rollover Dynamics. SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):18-30, April 2008, https://doi.org/10.4271/2008-01-0156.

Orlowski, K.; Moffatt, E.; Bundorf, R.; Holcomb, M., Reconstruction of Rollover Collisions. SAE Technical Paper 890857, SAE International, 1989, https://doi.org/10.4271/890857.

Meyer, S.E.; Davis, M.; Chng, D.; Herbst, B., Accident Reconstruction of Rollovers: A Methodology. SAE Technical Paper 2000-01-0853, SAE International, 2000.

Rivers, R.W., Basic physics: notes for traffic crash investigators and reconstructionists: an introduction for some a review for others. CHARLES C THOMAS • PUBLISHER, LTD, Springfield, Illinois, USA, 2004.

Struble, D.E.; Struble, J.D., Automotive Accident Reconstruction: Practices and Principles, Second Edition, (Ground Vehicle Engineering Series). Boca Raton, CRC Press, Taylor & Francis Group, LLC, 2020.

Todoruţ, A., Bazele dinamicii autovehiculelor: Algoritmi de calcul, teste, aplicaţii. Cluj-Napoca, Editura Sincron, 2005.

Todoruţ, A., Dinamica accidentelor de circulaţie. Cluj-Napoca, Editura U.T.PRESS, 2008.

Todoruţ, A.; Cordoș, N.; Bălcău, Monica, Ways to Evaluate the Transversal Stability Parameters of the Vehicles. Cluj-Napoca, Acta Technica Napocensis, Series: Applied Mathematics, Mechanics, and Engineering, Vol. 61, Issue III, September, 2018, pg. 323-332, Editura U.T.PRESS, ISSN 1221-5872, https://atna-mam.utcluj.ro/index.php/Acta/article/view/1010/937.

Todoruț, I.-A., Modelarea, simularea și experimentarea comportamentului dinamic al autovehiculelor în sistemul circulației rutiere - Teză de abilitare. Cluj-Napoca, Universitatea Tehnică din Cluj-Napoca, 2020, http://iosud.utcluj.ro/files/Dosare%20abilitare/Todorut%20Ioan%20Adrian/m-Teza-abilitare_Adrian-Todorut_DART-FARMM-UTCN.pdf.

Todoruţ, A.; Cordoş, N.; Barabás, I., Elemente de dinamica autovehiculelor. Cluj-Napoca, Editura U.T.PRESS, 2021.

Untaru, M.; Poțîncu, Gh.; Stoicescu, A.; Pereş, Gh.; Tabacu, I., Dinamica autovehiculelor pe roţi. Bucureşti, Editura Didactică şi Pedagogică, 1981.

Untaru, M.; Câmpian, V.; Ionescu, E.; Pereş, Gh.; Ciolan, Gh.; Todor, I.; Filip, Natalia; Câmpian, O., Dinamica autovehiculelor. Braşov, Universitatea Transilvania din Braşov, Sectorul Reprografie U02, 1988.


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