A LINEAR WHEEL–TRACK MODEL TO PREDICT INSTABILITY AND SHORT PITCH CORRUGATION
✍ Scribed by S. MULLER
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 332 KB
- Volume
- 227
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
The aim of this paper is to assist in understanding the formation of short pitch corrugation on railway rails. Based on previous work, a linear mathematical model for the description of the transient wheel±rail dynamics has been set up. To ensure linearity it is proved that the wheel±track model remains stable. For the long-term corrugation process a feedback between transient wheel±rail dynamics and a wear mechanism is assumed. A geometrical ®lter function is introduced which could explain why corrugation wavelengths observed in practice vary little with train speed. Calculations of the wear process on the rail show how vehicle speed and wheel and rail dynamics modify the corrugation response and how corrugation growth can be reduced.