METHOD OF OPERATIONAL INVESTIGATION OF ROLLING STOCK DERAILMENT
DOI:
https://doi.org/10.32703/2617-9040-2021-37-17Keywords:
rolling stock, derailment, computer simulation, dynamic of motion safety indicators.Abstract
The article presents the principles of the method of operational investigation of rolling stock derailment. This method is intended to identify the most significant mechanical reasons for transport accidents in order to find directions to further improving the safety requirements for the state of maintenance of freight cars and tracks on the basis of the data. The developed method establishes a general methodological order of conducting computer simulation of the dynamics of rolling stock of multivariate studies on calculating the safety indicators of train’s motion, and shows the significance of technical factors that provoked a certain event. By this method, the operational investigation of rolling stock derailment is based on the development of adequate computer models of dynamics of cars in trains. In this case, in detail, all the features of the car, which descended from the rails, are first. The presented method is based on the principles of factor analysis, where the intervals of varying events are presented in natural units of measurement. In this case, the assessment of security indicators for each research of the experiment plan is also carried out taking into account their dimension. As a result, the function of multiple regressions on the chosen indicator of motion safety allows not only to determine the significance of the factor of the ascent, but also to establish the level of factors, with exceeding the criteria for motion safety, that is, to determine the boundaries of the region with an acceptable level of motion safety.
References
ЛІТЕРАТУРА
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Fan Y-T., Wu W-F. Stability analysis and derailment evaluation of rail vehicles. // Int. J. Heavy Vehicle Systems. 2006. 13(3). Pp.194-211.
Molatefi H. On the investigation of wheel flange climb derailment. Mechanism and methods to control it. // Journal of Theoretical and Applied Mechanics. 2016. 54(2). Pp. 541-550.
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REFERENCES
Garg, V.K., & Dukkipati, R.V. (1984). Dynamics of Railway Vehicle Systems. Academic Press, 407 p.
Wickens, A.H. (2003). Fundamentals of rail vehicle dynamics: guidance and stability. Swets & Zeitlinger B.V., Lisse, the Netherlands, 286 p.
Dusza, M. (2014). The study of track gauge influence on lateral stability of 4-axle rail vehicle model. Archives of Transport, 30(2), pp. 7-20.
Kardas-Cinal, E. (2013). Selected problems in railway vehicle dynamics related to running safety. Archives of Transport, 31(3), pp. 37-45.
Burdzik, R., Nowak, B., Rozmus, J., Słowiński, P., Pankiewicz, J. (2017). Safety in the railway industry. Archives of Transport, 44(4), pp. 15-24.
Fan, Y-T., & Wu, W-F. (2006). Stability analysis and derailment evaluation of rail vehicles. Int. J. Heavy Vehicle Systems, 13(3), pp.194-211.
Molatefi, H. (2016). On the investigation of wheel flange climb derailment. Mechanism and methods to control it. Journal of Theoretical and Applied Mechanics, 54(2), pp. 541-550.
Opala, M. (2016). Study of the derailment safety index Y/Q of the low-floor tram bogies with different types of guidance of independently rotating wheels. Archives of Transport, 38(2), pp. 39-47.
Domin, R., Domin, Iu., Cherniak, G., Mostovych, A., Konstantidi, V., Gryndei, P. (2016). Investigation of the some problems of running safety of rolling stock on the Ukrainian railways. Archives of Transport, 40(4), pp. 79-91.
Wilson, N., Fries, R., Haigermoser, A., Mrang, M., Evans, J., Orlava, A. (2011). Assessment of safety against derailment using simulations and vehicle acceptance tests: a worldwide comparison of state-of-the-art assessment methods. Journal of Vehicle System Dynamics, 49, pp. 1113-1157.
Iwnicki, S., Stichel, S., Orlova, A., Hecht, M. (2015). Dynamics of railway freight vehicles. Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility, 53(7), pp. 1-39.
Saviz, M.R. (2015). Dynamic, stability and safety analysis of wagons on md52 bogies with modified suspension springs. International Journal on “Technical and Physical Problems of Engineering” (IJTPE), 7(4), pp. 75-85.
Malcolm, C. (2016). Design of passive vehicle suspensions for maximal least damping ratio. Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility, 54(5), pp. 568-584.
Domin, R., Domin, Yu., Cherniak, G. (2019). Estimation of stability of flat cars with various types of running gear against derailment. Problemy kolejnictwa, 63(185), pp. 119-124.
Domin R. (2017). Mechanical Safety of Railway Vehicles. LAP LAMBERT Academic Publishing, 133 p.
Pogorelov, D.Yu. (2005). Simulation of Rail Vehicle Dynamics with Universal Mechanism Software. Rail vehicle dynamics and associated problems. Gliwice: Silesian University of Technology, pp. 13-58.
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