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

Table 10

Wheel/rail contact stress under different lateral displacements.

Displacements (mm)	Standard LM profile					Optimized wheel profile
	Maximum von Mises stress (MPa)	Maximum contact stress (MPa)	Contact area (mm^2)	Long axis (mm)	Short axis (mm)	Maximum von Mises stress (MPa)	Maximum contact stress (MPa)	Contact area (mm^2)	Long axis (mm)	Short axis (mm)
−20	955	2627	144	15.5	10.3	903	1498	225	24.1	11.7
−15	861	1527	225	15.5	16.3	926	1687	214	24.1	10.3
−10	927	1659	220	18.5	17.2	955	1614	194	24.1	10.2
−5	955	1760	173	20.8	12	955	2300	155	20.5	6.5
0	946	1763	157	21.3	10.4	523	804	1136	35.5	41.5
5	867	1547	206	18.6	12.1	898	1729	144	23.6	6.5
10	955	2237	127	26.6	6	955	2292	111	23.6	5.4