Optimization and Design of a Railway Wheel Profile Based on Interval Uncertainty to Reduce Circular Wear

Table 1

Contact parameters of wheel/rail.

Parameters	Values
Rail type	75 kg/m
Wheel/rail material density	7 800 kg/m^3
Friction coefficient	0.25
Young’s modulus	2.1 × 10^11 Pa
Poisson’s ratio	0.27
Rail cant	1/40
Number of units in the contact spot	10
Number of strips in the contact spot	20
Critical creep speed	0.1 m/s
Shear modulus	8.077 × 10^10 Pa