Numerical analysis of load distribution in railway track under wheelset

• Autorzy: Szurgott P. , Bernyś K.
• Języki publikacji: EN

Abstrakty

EN

The results of numerical analysis of a load distribution in a railway track under wheelset are presented in the paper. Dynamic analysis was carried out using LS-DYNA computer code. Ballasted track with the rectilinear rail-line axis was taken into consideration. Finite element model of the track section was developed. The model included two rails, fastening systems, sleepers, ballast and the embankment. Fasteners and the ballast layer were modelled using 1-D massless discrete elements – springs and dampers. Sleepers were modelled as elastic beams. The embankment was reflected approximately by a rectangular prism with unmovable side and bottom boundary surfaces. Moving load was applied using simplified FE models of railway vehicles. Vertical forces were put in the wheel – rail contact points. Two types of the vehicles, and loads consequently, were considered – the first one including two single wheelsets whereas the second one was equipped with two classic 2-axle bogies. RAIL_TRACK and RAIL_TRAIN LS-DYNA’s modules were applied for simulating the vehicle – track interaction. Displacements of selected nodes as well as other characteristic values were registered during the numerical simulation. Contours of stress and displacements for selected moment of time were also presented as a result of the FE analysis. The study gave information about the behaviour of the railway track and foundation under load caused by single axle and 2-axle bogie. Obtained results were compared to those available in the literature and the technical instructions of railway design.

Słowa kluczowe

EN

railway rack; wheelset; bogie; moving load; numerical analysis

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 3
• Strony: 405--410
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Szurgott P.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. Sylwestra Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax: [phone]

autor

Bernyś K.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. Sylwestra Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Profillidis, V. A., Railway Management and Engineering, 3rd Edition, Ashgate Publishing Ltd., England 2006.
• [2] Aursudkij, B., A Laboratory Study of Railway Ballast Behaviour under Traffic Loading and Tamping Maintenance, PhD Thesis, University of Nottingham, United Kingdom 2007.
• [3] Technical Instructions Railroad Design and Rehabilitation, TI 850-02, AFMAN 32-1125(I), US Army Corps of Engineers, 2000.
• [4] Szurgott, P., Bernyś, K., Preliminary Numerical Analysis of Selected Phenomena Occurring in a Rail Fastening System, Journal of KONES Powertrain and Transport, Vol. 19, No. 4, pp. 607-614, 2012.
• [5] http://kolej.krb.com.pl/dt/zal1.htm.
• [6] Klasztorny, M., Vibrations of Single-Track Railway Bridges Under High-Speed Trains [in Polish], Wroclaw University of Technology Press, Wroclaw, Poland 1987.
• [7] Niemierko, A., et al., Reinforcing the Track and the Subgrade in the Approach Zones to Engineering Objects [in Polish], Project No. M1-123, Research Institute for Roads and Bridges, Warsaw, Poland 2009.
• [8] Polish Standard: PN-H-84027-07:1984. Steel for Rail-Engineering. Normal Rails. Sorts [in Polish], PKN, Warsaw, Poland 1984.
• [9] Hallquist, J. O., LS-DYNA V971 R4 Beta. Keyword User’s Manual, LSTC Co., Livermore, CA, United States 2009.