DEGRADATION DUE TO WHEEL DISTORTION AND EXTREME TEMPERATURE LOCALISATION UNDER HEAVY BRAKING

Paper i proceeding, 2025

Two separate studies, based on either field measurements or dynamometer testing of full-size wheels under simulated drag braking conditions, have identified the development of substantially uneven wheel temperatures distributions around the wheel circumference (i.e. global uneven heating) under heavy braking conditions. The results of these studies are discussed in terms of the implications for wheel-rail contact conditions and development of non-uniform tread damage in tread-braked wheels