Wheel profile design for target conicity and wide tread wear spreading

This article deals with design of new wheel tread profile. An interrelationship between the equivalent conicity, contact angle and location of contact area in nominal position, the contact stress and lateral contact spreading is explained and illustrated on examples of measured worn wheel profiles. This relationship has been considered in the proposed method for profile design applied to create new profiles with target conicity and at the same time wide contact spreading. The proposed profiles are suited for vehicles running on straight tracks and/or high power traction vehicles.

[1]  I Pratt,et al.  A unique design method for wheel profiles by considering the contact angle function , 2003 .

[2]  J. R. Evans,et al.  Optimising the wheel/rail interface on a modern urban rail system , 2008 .

[3]  Roger Enblom On Simulation of Uniform Wear and Profile Evolution in the Wheel - Rail Contact , 2006 .

[4]  O. Polách Creep forces in simulations of traction vehicles running on adhesion limit , 2005 .

[5]  Margarita Novales,et al.  Use of a genetic algorithm to optimize wheel profile geometry , 2007 .

[6]  Robert Fröhling Vehicle/Track Interaction Optimisation within Spoornet , 2003 .

[7]  Simon Iwnicki,et al.  Optimisation of railway wheel profiles using a genetic algorithm , 2004 .

[8]  U. Olofsson,et al.  Mapping rail wear regimes and transitions , 2004 .

[9]  Karl Popp,et al.  System dynamics and long-term behaviour of railway vehicles, track and subgrade , 2003 .

[10]  C. Esveld,et al.  Design of railway wheel profile taking into account rolling contact fatigue and wear , 2008 .

[11]  Oldrich Polach,et al.  Characteristic parameters of nonlinear wheel/rail contact geometry , 2010 .

[12]  Roy E. Smith,et al.  A design methodology for wheel and rail profiles for use on steered railway vehicles , 1991 .

[13]  R Lewis,et al.  Wear at the wheel/rail interface when sanding is used to increase adhesion , 2006 .

[14]  O Polach,et al.  On non-linear methods of bogie stability assessment using computer simulations , 2006 .

[15]  Stefano Bruni,et al.  Critical velocity of railway vehicles , 2006 .

[16]  John F. Leary,et al.  Development of freight car wheel profiles — a case study , 1991 .