Rail/wheel wear and RCF assessments using 3D train models and a new wear map

Wear and Rolling Contact Fatigue (RCF) on wheels and rails are influenced by relative motions between the studied rail and wheel pair, and therefore influenced by train dynamics as well. Wear and RCF assessments by suing train dynamics provide more accurate and comprehensive results. In addition, considering material property differences, previous rail wear maps may not be able to accurately describe the wear performance of materials that have significantly different properties. This paper presents a method for rail/wheel wear and RCF assessments using 3D train dynamics models. The use of train models allows the consideration of coupler forces, traction, and brakes during the assessment. Wear assessments were conducted by using an in-house rail wear map model developed for a twin disc wear machine at the Centre for Railway Engineering (CRE). The new rail wear map was developed by using the AS 60 rail material. Results show that the older BS11 rail material wear rate regimes and transitions are evidently different to the wear behaviour measured for AS60 rail material.