Contact surfaces between rail and wheel of a railway vehicle wheel set calculates profile contour of one component dependent upon given profile contour of second component

摘要

The contact surfaces fulfill a constant mainly rising monotonous function of the running radii differential DELTA r=f(y), passing through the characteristic points 0,1mm = DELTA r(y=ySP/2) = 2,5mm, 1mm = delta r(y=ySP) = 10mm, and DELTA r(y=0) = 0. The resultant formula is DELTA r(y=ySP/2) and DELTA r=r1-r2. r1 is the running radius right wheel at the moment of idealized contact point, r2 is the running radius left wheel at the moment of idealized contact point, y is displacement of geometric center of wheel pair at right angles to longitudinal track axis within the area of gauge tolerance -ySP = y = SP.