Ratcheting behaviour of high strength rail steels under bi-axial compression–torsion loadings: Experiment and simulation

Pun, Chung Lun; Kan, Qianhua; Mutton, Peter; Kang, Guozheng; Yan, Wenyi

doi:10.1016/j.ijfatigue.2014.03.021

Cited by 61 publications

(30 citation statements)

References 58 publications

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“…Limited data, other than microstructural analysis and the hardness measurements, is available on the mechanical properties of the claddings and the HAZs. Those properties are not only crucial for the strength and deforming behaviours of the clad rails but also important for numerically predicting the performance of the components under cyclic rolling contact [120,121]. Moreover, residual stress is one of the critical parameters concerning the fatigue behaviour of tribological components.…”

Section: Laser Claddingmentioning

confidence: 99%

A Review on Wear Between Railway Wheels and Rails Under Environmental Conditions

Zhu

Wang

Lewis

et al. 2019

Journal of Tribology

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The wheel-rail contact is an open system contact, which is subjected to various environmental conditions, such as temperature, humidity, water, and even leaves. All these environmental factors influence wheel-rail wear. Classical wheel-rail wear has been extensively studied under dry and clean conditions previously. However, with changes in environmental conditions, the wear rate and wear mechanism can change. This paper reviews recent contributions to wheel-rail wear with a special focus on the influence of environmental conditions. The main part includes the basics of wheel-rail wear, experimental methodology, wear and rolling contact fatigue (RCF), and some measures to counter these degradation mechanisms.

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Section: Laser Claddingmentioning

confidence: 99%

A Review on Wear Between Railway Wheels and Rails Under Environmental Conditions

Zhu

Wang

Lewis

et al. 2019

Journal of Tribology

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“…Based on the damage mechanism, many other researchers developed different kinds of theoretical models to predict the fatigue damage or the ratcheting–fatigue interaction for metals (Guo etal., 2020; Kumar etal., 2019; Mishra etal., 2015; Ren etal., 2018; Si-Jian etal., 2017; Xie etal., 2019; Zhou etal., 2017). It was noted that among different materials (Pun etal., 2014) or under different loading conditions (Zuo etal., 2014), the ratcheting–fatigue interaction and fatigue damage could be different. Therefore, it is worth simulating the damage-coupled ratcheting response as well as fatigue life of SA508 Gr.3 steel.…”

Section: Introductionmentioning

confidence: 99%

Damage-coupled ratcheting behaviors of SA508 Gr.3 steel at room and elevated temperatures: Experiments and simulations

Tian

Shao

et al. 2020

International Journal of Damage Mechanics

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A series of experiments subjected to uniaxial and non-proportionally multiaxial cyclic loadings were performed to investigate the ratcheting responses of SA508 Gr.3 steel at room and elevated temperatures. The influences of different stress levels and nonproportional loading paths on the damage-coupled ratcheting responses were discussed. From experimental results, cyclic softening characteristic and dynamic strain aging can be observed under cyclic loadings. Moreover, the steel exhibits an obvious nonproportional path-dependence of the damage evolution under multiaxial loading paths. To numerically simulate the ratcheting responses under uniaxial and multiaxial loadings with the extended cyclic plastic model, the damage-coupled variable was introduced into the classic isotropic and nonlinear kinematic hardening rules. Corresponding material parameters could be calibrated from experimental data, and comparisons between experimental and simulated results were performed to validate the proposed model.

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“…One group of researchers [7] evaluated the room temperature (RT) multiaxial fatigue strength of ER7T wheel steel under combined out-of-phase alternating torsion and pulsating compressive axial loads, which is similar to that observed under the contact area of the wheel. High strength rail steels were examined by Pun et al [8] regarding the cyclic plastic response to different bi-axial compression-torsion loading paths. These experiments were done only at room temperature, but included both non-proportional loading and ratcheting.…”

Section: Introductionmentioning

confidence: 99%

High temperature bi-axial low cycle fatigue behaviour of railway wheel steel

Nikas

Ahlström

2019

MATEC Web Conf.

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One of the most important aspects in railway operation is the interaction between rail and wheel. Railway wheels are commonly made from medium carbon steels (∼ 0.55 wt.% C), heat treated to a near pearlitic microstructure with some 5-10% pro-eutectoid ferrite. During the operation of freight trains, where block brakes are used, high thermal loads are evolved because of recurring braking and occasional slippage. Thus the combination of mechanical and thermal loads leads to changes in the mechanical properties of the material. The focus of the current investigation is to evaluate the mechanical behaviour of wheel material (UIC ER7T) subjected to non-proportional biaxial fatigue loading, as this simulates the actual working conditions in a better way than uniaxial loading. Axial-torsional low cycle fatigue tests were performed at room temperature and elevated temperatures using thin walled specimens to study the cyclic stress-strain properties of this material. The results showed large influence of temperature on the ratcheting behaviour of the material. Biaxial non-proportional loading gave much higher strain hardening as compared to uniaxial loading. Hardening due to dynamic strain ageing can be seen in the biaxial tests at temperatures around 300 • C. *

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Ratcheting behaviour of high strength rail steels under bi-axial compression–torsion loadings: Experiment and simulation

Cited by 61 publications

References 58 publications

A Review on Wear Between Railway Wheels and Rails Under Environmental Conditions

A Review on Wear Between Railway Wheels and Rails Under Environmental Conditions

Damage-coupled ratcheting behaviors of SA508 Gr.3 steel at room and elevated temperatures: Experiments and simulations

High temperature bi-axial low cycle fatigue behaviour of railway wheel steel

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