This paper presents the calculation of the equivalent bending stress amplitude in one cross section of a wheel set axle of a typical high-speed train, in the function of the velocity, taking into consideration two different wheel profiles. The stress calculations were made with the force results coming from multi-body simulations. The task of the research is to examine the effects of the velocity on the stress conditions of the wheelset axle. It was shown that the loading of the wheelset axle was not independent from the vehicle velocity and other parameters of the vehicle-track-system, namely from the wheel-rail contact profile. The results of the equivalent bending stress show that the wheelset axle of a typical high-speed train can have a higher loading in a lower speed range than at a higher one. But finally, in a higher speed range the loading of the axle is unambiguously increasing as a function of the velocity. It was the same situation in the case of both examined wheel profiles, where it was shown that the eventual difference between the equivalent bending stresses of the two profiles basically came from the difference of the transversal wheel-rail forces and not from the vertical ones. Multi-body simulations offer a possibility to examine the effects of special service conditions on wheelset loading. In the future the information coming from these examinations may be used to reduce the safety factors described in the European design standards for vehicles with defined service conditions.
The equivalent bending stress in the wheelset axle of a high-speed train as a function of the velocity
Biegebelastung in Radsatzwellen von Hochgeschwindigkeitszügen als Funktion der Geschwindigkeit
2010
6 Seiten, 4 Bilder, 2 Tabellen, 7 Quellen
Aufsatz (Konferenz)
Englisch
Achse , belastetes Bauteil , Biegebeanspruchung , dynamisches Verhalten , Eisenbahnachse , Eisenbahnfahrzeuglauftechnik , Fahrgeschwindigkeit , Funktion (Mathematik) , Hochgeschwindigkeitszug , mechanische Belastung , Mehrkörpersimulation , Radsatz , Schienenfahrzeug , Simulationsmodell , spurgebundener Schnellverkehr
Taylor & Francis Verlag | 2022
|Europäisches Patentamt | 2015
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