Mathematical model of interactions between railway and track considering distributions of contact forces throughout contact spots.
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2015, Vol 2, Issue 2
Abstract
The work objective was to develop a mathematical model of interactions between the railway vehicle and the track considering the distribution of contact forces of the wheel-rail pair throughout contact spots. The methods of mathematical modelling and the computer simulation, the theory of vibrations were used. The paper presents a 3D mathematical model of interactions between the railway vehicle and the track. An approximated technique to solve the problem of interactions between the wheel and the rail was proposed determining the loca-tion and dimensions of non-elliptic contact spots, including conform contact, and the distribution of normal and tangent interaction forces throughout those spots. A comparative analysis of the results of contact interactions of the wheel-rail pair was conducted using the model developed for calculating circular 300m-radius curve negotiating for the freight car equipped with the wheels having a different profile of rims. We came to the conclusion that the technique proposed for solving the 3D problem of interactions of the wheel-rail pair offers the possibility of determining the parameters of different-configuration contact spots and distributing contact forces by those spots. Thus, this technique can be used for calculations of the dynamic per-formance and wear of the wheels of railway vehicles equipped with the wheels having both conform and non-conform contacts with rails.
Authors and Affiliations
V. Ushkalov, T. Mokriy, I. Malysheva
Keywords
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