Influence of wheel out‐of‐roundness on the remaining life of railway wheels under mixed‐mode fatigue loading

Rui‐Guo Yan, Wenjing Wang, Yutong Guo, Xiaolong Liu, Shengchuan Wu, Zhen‐Xian Zhang

2022Fatigue & Fracture of Engineering Materials & Structures13 citationsDOI

Abstract

Abstract As a common condition in train operation, the out‐of‐roundness (OOR) of wheels may have a great influence on the life of cracked wheels. In this study, the I–II mixed‐mode crack growth rate of different angles was tested, finite element analysis was carried out by using the test results, and the influence of different wheel roundness conditions on the life of cracked wheels was revealed. The results show that the mode II stress intensity factor of mixed‐mode cracks is the main driving force for crack propagation in the process of wheel rim crack growth. With an increase in the wheel scar length and the order of the wheel polygon, the crack propagation life decreases significantly.

Topics & Concepts

Structural engineeringRoundness (object)EngineeringStress intensity factorFinite element methodMixed modeMaterials scienceMode (computer interface)Polygon (computer graphics)Composite materialMechanical engineeringComputer scienceFrame (networking)Operating systemRailway Engineering and DynamicsGear and Bearing Dynamics AnalysisMechanical Engineering and Vibrations Research