Thermal analysis of railroad bearings: Effect of wheel heating

Sie sind hier: Homepage > Suche

Thermal analysis of railroad bearings: Effect of wheel heating

Tarawneh, Constantine M. / Fuentes, Arturo A. / Wilson, Brent M. / Cole, Kevin D. / Navarro, Lariza

Catastrophic bearing failure is a major concern for the railroad industry because it can lead to costly train stoppages and even derailments. Excessive heat buildup within the bearing is one of the main factors that can warn of impending failure. A question is often raised regarding the transfer of heat from a wheel during braking and whether this can lead to false setouts. Therefore, this work was motivated by the need to understand and quantify the heat transfer paths to the tapered roller bearing within the railroad wheel assembly when wheel heating occurs. A series of experiments and FE (finite element) analyses were conducted in order to identify the different heat transfer mechanisms, with emphasis on radiation. The experimental setup consisted of a train axle with two wheels and bearings pressed onto their respective journals. One of the wheels was heated using an electric tape placed around the outside of the rim. A total of 32 thermocouples scattered throughout the heated wheel, the axle, and the bearing circumference measured the temperature distribution within the assembly. In order to quantify the heat radiated to the bearing, a second set of experiments was developed. These included, in addition to the axle and the wheel pair, a parabolic reflector that blocked body-to-body radiation to the bearing. The appropriate and convection coefficient estimates were measured or calculated from the aforementioned experiments. Experimental temperature data along the radius of the heated wheel, the bearing circumference, and at selected locations on the axle were compared to the results of the FE model to verify its accuracy.

Zugriff

Zugriff über TIB

Verfügbarkeit in meiner Bibliothek prüfen

Bestellung bei Subito €

Exportieren, teilen und zitieren

Dokumentinformationen

Titel :

Thermal analysis of railroad bearings: Effect of wheel heating

Beteiligte:

Tarawneh, Constantine M. (Autor:in) / Fuentes, Arturo A. (Autor:in) / Wilson, Brent M. (Autor:in) / Cole, Kevin D. (Autor:in) / Navarro, Lariza (Autor:in)

Erschienen in:

Mechancial and Civil Engineering Papers, Electrical Engineering Papers, JRC, ASME/IEEE/ASCE Joint Rail Conference, 2009 ; 193-204

Erscheinungsdatum :

2009

Format / Umfang :

12 Seiten, 15 Bilder, 4 Tabellen, 14 Quellen

ISBN :

978-0-7918-4338-3

DOI :

https://doi.org/10.1115/JRC2009-63055

Medientyp :

Aufsatz (Konferenz)