Based on the finite element analysis of wheel/rail friction and experimental data of the phase transformation in wheel steel, the mechanism of wheel thermal fatigue under high speed and heavy load conditions was simulated. The changes of temperature field under several operating conditions (loading, braking time, running speed) have been calculated, and its affection on phase transformation zone in wheel tread has been discussed. The peak temperature of contact zone may reach over austenitizing temperature under heavy load sliding. The depth of austenized zone may reach at 1 mm under the wheel tread. The increase of sliding speed does not affect the depth of phase transformation zone, but increase the probability of phase transformation. Both the peak temperature and the size of phase transformation zone increased with increased loading.
Simulation of friction heat induced phase transformation in high speed train wheel
Simulation der durch Reibungshitze induzierten Phasenumwandlung im Hochgeschwindigkeits-Eisenbahnrad
Titel chinesisch
Acta Metallurgica Sinica (Chinese Letters) ; 40 , 9 ; 909-914
2004
6 Seiten, 7 Bilder, 8 Quellen
Aufsatz (Zeitschrift)
Unbekannt
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