Optimisation of Railway Polynomial Transition Curves with Different Number of Terms

• Autorzy: Woźnica P.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the results of research of influence of degree and number of polynomial terms of railway transition curves (TCs) on their dynamical properties. The research performed for needs of this work are planned numeric tests. The search for the proper shape means the evaluation of the curve properties based on chosen dynamical quantity and generation of such shape with the use of mathematically understood optimisation methods. For the needs of this work advanced vehicle model, dynamical track-vehicle and vehicle-passenger interactions as well as optimisation methods were exploited. The subject of the analysis are odd degree polynomial transition curves of the 5th, 7th, 9th and 11th degree. For each degree of the polynomial a range of acceptable number of polynomial terms was determined. One dynamical quantity - minimum of integral of vehicle body lateral acceleration - being the results of simulation of railway vehicle advanced model is exploited in the determination of quality function (QF).

Słowa kluczowe

EN

polynomial railway transition curves; computer simulation; optimisation

• Wydawca: Międzynarodowa Wyższa Szkoła Logistyki i Transportu we Wrocławiu
• Czasopismo: Logistics and Transport
• Rocznik: 2014
• Tom: Vol. 22, No. 2
• Strony: 57--66
• Opis fizyczny: Bibliogr. 10 poz., tab., rys.

Twórcy

autor

Woźnica P.

• Warsaw University of Technology, Poland

Bibliografia

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• [6] Zboinski K., Woznica P.: Formation of Railway Transition Curves based on Advanced Dynamic Vehicle Models, B.H.V. Topping, J.M. Adam, F.J. Pallarés, R. Bru, M.L. Romero, Proc. of the Tenth International Conference on Computational Structures Technology, Civil-Comp Press, Stirlingshire, 2010.
• [7] Woznica P.: Formation and evaluation of dynamic properties of railway transition curves using the methods of optimisation and simulation (Ph.D. in Polish), WUT Warsaw 2012.
• [8] Zboinski K.: Nonlinear dynamics of railway vehicles in the curved track (book in Polish), WNITE, Warsaw-Radom 2012.
• [9] Zboinski K., Woznica P.: Optimisation of Railway Polynomial Transition Curves: A Method and Results, in J. Pombo, (Editor), Proceedings of the First International Conference on Railway Technology: Research, Development and Maintenance, Civil-Comp Press, Stirlingshire, 2012.
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