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.