Dynamics of Railway Track

• Autorzy: Bajer C. , Bogacz R.
• Konferencja: German-Polish Workshop on Dynamical Problems in Mechanical Systems (8 ; 31.08-5.09.2003 ; Schmochtitz, Germany)
• Języki publikacji: EN

Abstrakty

EN

The classic and reinforced railway track is composed of two infinite rails separated from sleepers by visco-elastic pads. There are numerous assumptions leading to different simplifications in railway track modelling. The rails are modelled as infinite Timoshenko beams, sleepers by lumped masses or elastic bodies and ballast as a visco-elastic foundation. Nowadays the interest of engineers is focused on the Y-shaped sleepers. The fundamental qualitative difference between the track with classic or Y sleepers is related to local longitudinal symmetric or antymetric features of railway track. The sleeper spacing influences the periodicity of elastic foundation coefficient, mass density (rotational inertia) and shear effective rigidity. The track with classical concrete sleepers is influenced much more by rotational inertia and shear deflections than the track with Y sleepers. The increase of elastic wave velocity in track with Y sleepers and more uniform load distribution will be proved by the analysis and simulations. The analytical and numerical analysis allows us to evaluate the track properties in a range of moderate and high speed train. However, the correct approach is not simple, since the structure of the track interacts with wheels, wheelsets, boogies and vehicles, depending on the complexity of the analysis.

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Problems
• Rocznik: 2004
• Tom: Vol. 28, No. 1
• Strony: 7--16
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Bajer C.

• Institute of Fundamental Technological Research, Polish Academy of Sciences
• Railway Scientific and Technical Centre

autor

Bogacz R.

• Institute of Fundamental Technological Research, Polish Academy of Sciences
• Institute of Vehicles, Warsaw University of Technology

Bibliografia

• 1. Bajer, С., 1998, The space-time approach to rail/wheel contact and corrugations problem. Comp. Ass. Meeh. Eng. Sci., 5, 267-283.
• 2. Bogacz, R., 1995, Residual stresses in high-speed wheel/rail system; Shakedown and corrugations, In A.N. Kounadis, Ed. Proc, of 1st European Conference on Steel Structures EUROSTEEL '95, Athens, A.A. Balkema, 331-343.
• 3. Bogacz, R., Bajer, C., 2002, On modelling of contact problems in railway engineering. In: Recent Advances in Applied Mechanics, J.T. Katsikadelis, D.E. Beskos and E.E. Gdoutos, Eds., Nat. Techn. Univ, of Athens, Greece, 77-86.
• 4. Bogacz, R., Dżuła, S., 1998, Dynamics and stability of a Wheelset/Track Interaction Modelled as Nonlinear Continuous System, Machine Dynamics Problems, 20, 23-24.
• 5. Bogacz, R., Kocjan, M., Kurnik, W., 2002, Dynamics of wheel-tyre subjected to moving oscillating force, Machine Dynamics Problems.
• 6. Bogacz, R., Kowalska, Z., 2001, Computer simulation of the interaction between a wheel and a corrugated rail, Eur. J. Meeh. A/Solids, 20, 673-684.
• 7. Bogacz, R., Krzyżyński, T., Popp, K., 1995, Application of Floquet’s theorem to highspeed train/track dynamics, Advance automotive technologies, ASME Congress, 55-61.
• 8. Bogacz, R., Ryczek, B., 2003, On active damping of stick-slip self-excited vibration for history dependent dry friction model, Proc., Int. Conf, on Modelling and Sim. of the Fric. Phenom, in the Phys, and Techn. Syst.- 'Friction 2002', Warsaw, 54-61.
• 9. Knothe, K., 1983, Rail Corrugations, ILR Bericht 56, Berlin.
• 10. Kowalska, Z., Bogacz, R., 2001, Computer simulation of the dynamic wheel/rail system, in Simulation in Research and Development, R. Bogacz, Z. Kołodziński and Z. Strzyżakowski, Eds., Warsaw.