Analysing the rolling contact damage behavior of a high-speed wheel tread — A case study

HE, Chenggang; ZOU, Gang; GAN, Yaozhe; YE, Rongwei; ZHAI, Yujiang; LIU, Jihua

doi:10.1016/j.wear.2023.204677

Cited by 3 publications

(1 citation statement)

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“…Wheel-rail contact, which occurs in a small area of less than 100 mm 2 , exposes the wheel to complex random dynamic and impact loads amounting to several tons [2]. These loads, combined with longitudinal friction at the contact point, can cause surface material wear and the formation of internal cracks, known as peeling or fish scale cracks, below the tread [3]. When dynamic stress interacts with the rim material's inherent microstructure, deeper cracks may form and eventually lead to fatigue fractures, posing a significant risk [4].…”

Section: Introductionmentioning

confidence: 99%

High-Cycle Fatigue Behavior of D2 Wheel Steel under Uniaxial and Multiaxial Loading Conditions for Potential Applications in the Railway Industry

Zhao

2023

Crystals

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This study investigates the fatigue damage evolution mechanisms of D2 wheel steel under high-cycle uniaxial and multiaxial loading conditions, with a focus on determining the fatigue crack growth threshold (FCGT). Uniaxial and multiaxial FCGT tests were performed on pre-cracked D2 wheel steel specimens subjected to high-frequency cyclic loading at stress ratios (R) of 0.1. The results indicate that the FCGT for D2 wheel steel under uniaxial loading conditions ranges between 8–9 MPa.m0.5, while under multiaxial loading conditions, it ranges between 6–9 MPa.m0.5. Scanning electron microscopy analysis revealed differences in the crack propagation mechanisms between the uniaxial and multiaxial tests, with cracks deviating from their path and following the microstructure in the uniaxial tests, and cracks propagating along planes of weakness in the multiaxial tests. These findings provide insights into the high-cycle fatigue behavior of D2 wheel steel under different loading conditions for potential applications in the railway industry.

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Section: Introductionmentioning

confidence: 99%