Safety of a railway wheelset – derailment simulation with increasing lateral force
Safety of a railway wheelset – derailment simulation with increasing lateral force
- Neue Suche nach: Barbosa, Roberto Spinola
- Neue Suche nach: Barbosa, Roberto Spinola
The motivation for this research is to make a comparison between dynamic results of a free railway wheelset derailment and safety limits. For this purpose, a numerical simulation of a wheelset derailment submitted to increasing lateral force is used to compare with the safety limit, using different criteria. A simplified wheelset model is used to simulate derailments with different adhesion conditions. The contact force components, including the longitudinal and spin effects, are identified in a steady-state condition on the verge of a derailment. The contact force ratios are used in a three-dimensional (3D) analytical formula to calculate the safety limits. Simulation results obtained with two contact methods were compared with the published results and the safety limit was identified with the two criteria. Results confirm Nadal’s conservative aspect and show that safety 3D analytical formula presents slightly higher safety limits for lower friction coefficients and smaller limits for high friction, in comparison with the simulation results with Fastsim.
Dokumentinformationen
Safety of a railway wheelset – derailment simulation with increasing lateral force
Vehicle System Dynamics ; 47 , 12 ; 1493-1510
2009-12-01
18 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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