Particularly in recent years, railroads (transit, freight, and commuter) have been giving more attention to wheel/rail contact behavior and optimization. Both rail and wheel profiles throughout the industry have been customized to reduce wear, reduce contact stresses, increase rail vehicle lateral stability, reduce rolling contact fatigue formation, and delay corrugation onset. Custom rail profiles are implemented through rail grinding. To both aid in the prediction of level of grinding effort and ensure post grind quality, Profile Quality Indices have been developed to summarize the actual profile deviation from the desired rail profile shape (template). In North America, the AREMA Grind Quality Index (GQI) is often the standard applied. Advanced Rail Management has developed an alternative referred to as the Profile Deviation Index (PDI). By comparing these indices through case studies, their strength and weaknesses are determined, and expectations that should accompany their use is discussed.
Role of Profile Quality Indices in Rail Profile Optimization
Lect.Notes Mechanical Engineering
The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks ; 2023 ; Ottawa, ON, Canada August 21, 2023 - August 25, 2023
01.11.2024
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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