Abstract
A mathematical model of the system Railway Vehicle Wheel–Track with a wheel flat of a wheelset has been made. The system Railway Vehicle Wheel–Track has been examined on the vertical plane. The mathematical model of the system Railway Vehicle Wheel–Track has employed linear, nonlinear, elastic and damping discrete elements. Rail dynamics haves been described using the finite element method. The unevenness of the rail and the wheel of the wheelset have been evaluated considering the contact between the rail and the wheel flat of the wheelset. The analysis of dynamic processes taking place in a railway vehicle wheel with the wheel flat moving at speed V = 60 km/h has been accomplished. The results of mathematical modelling of the above introduced dynamic system have been presented along with graphically displayed research findings of the conducted research. Sukurtas sistemos „Geležinkelių vagono ratas – kelias“ su aširačio rato iščiuoža matematinis modelis. Sistema „Geležinkelių vagono ratas – kelias“ nagrinėjama vertikalioje plokštumoje. Sistemos „Geležinkelių vagono ratas – kelias“ matematiniame modelyje yra panaudoti tiesiniai ir netiesiniai tamprieji ir slopinimo diskretiniai elementai. Bėgio dinamika aprašoma baigtinių elementų metodu. Kontakte tarp bėgio ir aširačio rato su iščiuoža įvertinti bėgio ir aširačio rato nelygumai. Atlikta geležinkelio vagono rato su iščiuoža, judančio greičiu V = 60 km/val., dinaminių procesų analizė. Pateikti šios dinaminės sistemos matematinio modeliavimo rezultatai. Tyrimų rezultatai pavaizduoti grafiškai ir pateiktos tyrimų išvados.
Highlights
Rail traffic safety, power output, fuel efficiency, track usage, etc. depend on the wheel-rail interaction of a railway vehicle
The developed mathematical model of the system Railway Vehicle Wheel–Track enables to examine the interaction between the wheel flat and the rail and to assess the soil of the rail bed, sleepers and intermediary physical and mechanical properties, wheel geometry, the dynamic characteristics of the wagon at different running speeds and the sizes of wheel flats
Research on the dynamic processes of the system Railway Vehicle Wheel–Track with wheel flat L = 100 mm under speed V = 60 km/h shows that the static load of the wheel is equal to 0.1 MN
Summary
Power output, fuel efficiency, track usage, etc. depend on the wheel-rail interaction of a railway vehicle. Depend on the wheel-rail interaction of a railway vehicle.
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