Research on the Profile Matching of New or Worn Wheel/Rail

General profiles chosen from worn wheel profiles and railheads (briefly, worn wheel and rail profile) measured by wheel-rail profile admeasuring apparatus were used to build the finite element models, and the new/worn wheel-rail contact problems were analyzed respectively on the tangent and curved track. Variable regulations of contact area's size, shape and position were generalized. The results show that, on the tangent and curved track, contact area's acreage is small and the peak point of equivalent stress is large occur in the model of new wheel-old rail, which indicates that turning worn wheel profile into original profile is unreasonable. Compared with other models, the contact model of old wheel-old rail shows the largest contact area's size, and such wheel-rail matching is the best one, which provides references for designing the turned wheel profile to adapt to worn railhead profile and reducing the wear of wheel and railhead profile.