Wear Analysis of Freight Train Within Different Curve Parameters Case Study: Ethio Djibouti Freight Train
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Date
2023-07
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Addis Ababa University
Abstract
This research deals with wear analysis along the Ethio Djibouti freight train under different parameter conditions. The main focus of this research is to understand how different parameters influence wear along the curve during operation, considering the effect of supervision, curve radius, and curving speed after a given distance of operation, such as 20000 km. The measured wear rates strongly correlate with superelevation. Below the equilibrium cant, wear rate rises exponentially as cant deficiency increases. However, further increasing cant beyond equilibrium provides diminishing wear rate returns. This research enhances the fundamental understanding of wheel rail wear mechanics in curves and provides validated tools to predict and mitigate wear.The results show that when the above distance is run under different curve radius creep, the wear volume increases from 6.8 mm to 3.7 mm as the radius increases from 600 to 1200 m, especially on the outside wheels. Wear increased from 6.6 to 7.8 mm as the speed increased from 40 to 100 km/hr. after a distance of 20000 km. Increasing the superelevation from 80 to 140 mm reduced wear due to improved curves from 7.1 to 6.7 mm after 20.00 km, and a significant decrease in wear volume from 8.9 to 2.3 mm outside wheels after a 20.00 km operational distance.
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multi body analysis, Archard law, wear model, curved track, superelevation