Thermo-mechanical coupled finite element analysis of rolling contact fatigue and wear properties of a rail steel under different slip ratios

Lian, Qinglin; Deng, Guanyu; Tieu, Anh Kiet; Li, Huijun; Liu, Zhiming; Wang, Xi; Zhu, Hong Tao

doi:10.1016/j.triboint.2019.105943

Cited by 48 publications

(20 citation statements)

References 42 publications

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“…On the other hand, when the RA behaved with high stability, it would be too difficult to achieve the MT but undergo with other transitions, leading to small promotion of wear resistance. As for 4# sample applied with the low contact stress and high slip ratio, the temperature on the contact zone would be higher than other conditions with the low slip ratio [ 44 ]. The increase in temperature could contribute to the stabilization of RA.…”

Section: Discussionmentioning

confidence: 99%

Dry Rolling/Sliding Wear of Bainitic Rail Steels under Different Contact Stresses and Slip Ratios

Liu

Zhang

et al. 2020

Materials

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This study aims to deeply understand the effect of contact stress and slip ratio on wear performances of bainitic rail steels. The results showed that the wear loss increased as the contact stress and slip ratio increased. Based on the surface damage morphology and microstructural analyses, it revealed that the rolling contact fatigue wear mechanism played a significant role under the low slip ratio, but the dominant wear mechanism transferred to the abrasive wear at the high slip ratio. Meanwhile, the bainitic steel specifically presented worse wear resistance under the abrasive wear mode. Compared with the influence of a slip ratio, the increase in contact stress led to severer plastic flows and contributed to the propagation of cracks. In addition, the contact stress and slip ratio had the opposite effect on the friction coefficient, that is, the friction coefficient of bainitic steels behaved the inverse proportion with the contact stress, but positive proportion with the slip ratio. At last, the increase in slip ratio had more significant effect on the reduction of retained austenite (RA) than the enlargement of contact stress due to the fact that the RA would probably be removed before the martensitic transformation occurred under the abrasive wear mechanism.

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Section: Discussionmentioning

confidence: 99%

Dry Rolling/Sliding Wear of Bainitic Rail Steels under Different Contact Stresses and Slip Ratios

Liu

Zhang

et al. 2020

Materials

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“…Krop et al [62] developed a numerical simulation to investigate scratching on polymer composite which was polycarbonates [62], while Gao et al [40] used the same technique on talc-filled polypropylene polymer. Lian et al [63] used FEM to model fatigue life and wear on railways by applying equivalent pressure and heat source on rail surfaces. The fatigue life was found to be decreased with slip ratio.…”

Section: Finite Elements and Boundary Elements Methodsmentioning

confidence: 99%

Practice of Simulation and Life Cycle Assessment in Tribology—A Review

Kurdi

Alhazmi

et al. 2020

Materials

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To simulate today’s complex tribo-contact scenarios, a methodological breakdown of a complex design problem into simpler sub-problems is essential to achieve acceptable simulation outcomes. This also helps to manage iterative, hierarchical systems within given computational power. In this paper, the authors reviewed recent trends of simulation practices in tribology to model tribo-contact scenario and life cycle assessment (LCA) with the help of simulation. With the advancement of modern computers and computing power, increasing effort has been given towards simulation, which not only saves time and resources but also provides meaningful results. Having said that, like every other technique, simulation has some inherent limitations which need to be considered during practice. Keeping this in mind, the pros and cons of both physical experiments and simulation approaches are reviewed together with their interdependency and how one approach can benefit the other. Various simulation techniques are outlined with a focus on machine learning which will dominate simulation approaches in the future. In addition, simulation of tribo-contacts across different length scales and lubrication conditions is discussed in detail. An extension of the simulation approach, together with experimental data, can lead towards LCA of components which will provide us with a better understanding of the efficient usage of limited resources and conservation of both energy and resources.

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“…Therefore, the Coulomb model was widely used in early wheel-rail contact theories for calculating adhesion forces, including [16] Urban Rail Transit Carter's [5] and Fromm's [6] two-dimensional rolling contact theory, Vermeulen and Johnson's [23] three-dimensional rolling contact theory, and Shen et al's [24] and Kalker's [18,25] previous studies. With the application of the finite element method (FEM) to the analysis of the wheel-rail contact problems, the Coulomb model is also commonly used to define the relationship between the wheel and rail [26][27][28][29][30][31][32][33]. The main reason for its preference is not accuracy, but simplicity.…”

Section: The Coulomb Modelmentioning

confidence: 99%

A Review on the Application of Friction Models in Wheel-Rail Adhesion Calculation

Yuan

Tian

et al. 2021

Urban Rail Transit

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Friction is the bond linking the tangential and normal forces at the wheel-rail interface. Modeling friction is the precondition for the wheel-rail adhesion calculation. In this work, the critical role of friction in the calculation of wheel-rail adhesion is discussed. Four types of friction models (Coulomb model, linear model + Coulomb model, rational model and exponential model) which are commonly used for the calculation of wheel-rail adhesion are reviewed, in particular with regard to their structural characteristics and application state. The adhesion coefficients calculated from these four friction models using the Polach model are analyzed by comparison with the measured values. The rational model and the exponential model are more flexible for defining the falling friction, and the adhesion coefficient calculated by these two models is highly consistent with the measured one. Though the rational model and exponential model describe the falling friction well, the existing friction models are not applicable for calculating adhesion after considering more realistic factors, such as thermal effect, contaminants and so on. Developing a novel and practical friction model to accurately describe the wheel-rail friction behavior is still an essential but challenging and significant task. This review provides a reference for the selection of existing friction models and generates fresh insights into developing novel and practical friction models.

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Thermo-mechanical coupled finite element analysis of rolling contact fatigue and wear properties of a rail steel under different slip ratios

Cited by 48 publications

References 42 publications

Dry Rolling/Sliding Wear of Bainitic Rail Steels under Different Contact Stresses and Slip Ratios

Dry Rolling/Sliding Wear of Bainitic Rail Steels under Different Contact Stresses and Slip Ratios

Practice of Simulation and Life Cycle Assessment in Tribology—A Review

A Review on the Application of Friction Models in Wheel-Rail Adhesion Calculation

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