Numerical analysis of a shaped rail pad under selected static load

• Autorzy: Szurgott P. , Gotowicki P. , Niezgoda T.
• Języki publikacji: EN

Abstrakty

EN

Numerical analysis of selected type of the polyurethane rail pad is presented in the paper. A shaped pad with cylindrical-shaped elements in its working section was selected as a representative for the computational simulation. Analysis reflected the experimental test according to the valid standard. The test included loading of the vertical force perpendicular to the foot of the rail. Such test allows determining the static stiffness of the pad. The Mooney - Rivlin material model was selected in the current study. Necessary experimental tests including a uniaxial compression and tension were conducted to provide material constants for the hyperelastic material model applied for the FE model. Simplified FE models of the considered rail pad and the rail were developed. Rounded corners and edges of the cylindrical-shaped elements were omitted, since their modelling required a significant density of the FE mesh. Vertical force perpendicular to the foot of the rail was declared as nodal force distributed evenly along the edges of the selected finite element models Non-linear static analysis was performed using MSC.Marc software with large displacements and deformations taken into consideration. The obtained results allowed estimating deformations and the state of stress in a highly deformed rail pad. The static stiffness of the pad was defined as secant stiffness based on the vertical force - deflection curve.

Słowa kluczowe

EN

numerical analysis; FEM; rail pad; hyperelastic material; fastening

• 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: 2012
• Tom: Vol. 19, No. 1
• Strony: 407--414
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Szurgott P.

autor

Gotowicki P.

autor

Niezgoda T.

• 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

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• [8] Experimental Elastomer Analysis, User Guide, MSC.Software Corporation, United States 2005.
• [9] Railway applications – Track – Test Methods for Fastening Systems – Part 9: Determination of Stiffness, Polish Standard No. PN-EN 13146-9, Warsaw 2009.
• [10] Marc 2007 r1, Volume B: Element Library, MSC.Software Corporation, United States 2007.