An Innovative Tool for Simultaneous Wheel and Rail Damage Evaluation
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Two of the main problems in railway systems, both dynamically (safety, comfort, etc.) and economically (planning of maintenance interventions maintenance, reduction of wheel and rail lifetime, etc.) are represented by the wear of wheel and rail profiles and by the rolling contact fatigue. For these reasons, nowadays the prediction of wear and crack growth at the wheel-rail interface is a fundamental problem in the railway field, directly correlated to the maintenance planning. Hence, the authors present the development of an efficient and innovative modelling approach, suitable to different scenarios, that combines a wear model to evaluate the wheel and rail profile evolution and a RCF crack prediction model based on experimental relationship validated through experimental tests carried out in the Tribology Research Institute of the Southwest Jiaotong University in Chengdu.
KeywordsRolling contact fatigue Wheel-rail wear Simulation Wheel-rail interaction Multibody models of railway vehicles
The research activity has been carried out also in collaboration with the industrial partners of the projects (Hitachi Rail Italy and Gest S.p.A), which provided all the technical and experimental data needed for the preliminary model validation. The work was supported by the Sichuan Science and Technology Program (No. 2019YFH0094).