Rail surface crack initiation analysis using multi-scale coupling approach

Ma, Yunxiang; Markine, Valéri; Mashal, Abdul Ahad

doi:10.1201/b21185-171

Cited by 3 publications

(4 citation statements)

References 18 publications

(21 reference statements)

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“…Others obtain accurate results with a very detailed FE model for a single run and then substitute those outputs to empirical models for cyclic estimations [14]. The dynamic response can be obtained in a coarsely meshed global FE model of a larger region, whose results may be used as boundary conditions in a subsequently developed finely meshed local sub-model for predicting damage of a smaller geometry [50][51][52]. The importance of considering the behaviour of non-linear plastic material, which is possible through FE models, is discussed in Section 5.3.…”

Section: Finite Element (Fe) Simulation Approachmentioning

confidence: 99%

Evaluation of Numerical Simulation Approaches for Simulating Train–Track Interactions and Predicting Rail Damage in Railway Switches and Crossings (S&Cs)

2021

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Switch and crossing (S&C) faults are a major cause of track-related delays and account for a significant proportion of maintenance and renewal budgets for railway infrastructure managers around the world. Although various modelling approaches have been proposed in the literature for the simulation of vehicle–track dynamic interaction, wheel–rail contact and damage prediction, there is a lack of evaluation for combining these approaches to effectively predict the failure mechanism. An evaluation of S&C modelling approaches has therefore been performed in this article to justify their selection for the research interests of predicting the most dominant failure mechanisms of wear, rolling contact fatigue (RCF) and plastic deformation in S&C rails by recognising the factors that influence the accuracy and efficiency of the proposed modelling approaches. A detailed discussion of the important modelling aspects has been carried out by considering the effectiveness of each individual approach and the combination of different approaches, along with a suggestion of appropriate modelling approaches for predicting the dominant failure mechanisms.

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Section: Finite Element (Fe) Simulation Approachmentioning

confidence: 99%

Evaluation of Numerical Simulation Approaches for Simulating Train–Track Interactions and Predicting Rail Damage in Railway Switches and Crossings (S&Cs)

2021

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“…→ Wear & RCF (service life) prediction: Using the well-established wear/multi-axial fatigue life models, the degradation process of the crossing rail, such as wear [47], rolling contact fatigue (RCF) crack initiation and propagation [48,49], etc., can be predicted.…”

Section: Future Applications Of 'Efe-cs' Modelmentioning

confidence: 99%

Modelling and experimental validation of dynamic impact in 1:9 railway crossing panel

Mashal

Markine

2018

Tribology International

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To improve the understanding of dynamic impact in 1:9 crossing panel, which is suffering from rapid surface degradation, detailed modelling and experimental studies are performed. A three-dimensional explicit finite element (FE) model of a wheel rolling over a crossing rail, that has an adaptive mesh refinement procedure coupled with twodimensional geometrical contact analyses, is developed. It is demonstrated that this modelling strategy performs much better than the 'conventional' FE modelling approach. Also, the experimental validations show that the FE results agree reasonably well with the field measurements. Using the validated FE model, the tribological behaviour of contact surfaces is studied. The results indicate that the proposed modelling strategy is a promising tool for addressing the problems of wheel-crossing dynamic impact.

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“…The global dynamic response of the vehicle-track interaction is neglected. In future work, a multiscale modelling approach [16,54] (as shown in Figure 32), in which the FE model would be included as a nice component, ranging from micrometre to kilometre scales would be developed and used to study the vehicle and track interaction comprehensively. More details about the interface handshaking mechanisms of the integrated multiscale modelling approach can be found in [54].…”

Section: Further Applications Of the Modelmentioning

confidence: 99%

“…Schematic graph of multi-scale strategy for wheel-rail interaction[54]. a) Complete macro scale -vehicle/track interaction; b) Component macro scale -FE model of wheel/rail interaction; c) Mesoscale -Rail FE sub-model crack initiation analysis; d) Micro scale -Rail micro-crack analysis.…”

mentioning

confidence: 99%

Modelling verification and influence of operational patterns on tribological behaviour of wheel-rail interaction

Markine

Mashal

et al. 2017

Tribology International

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Verification of the explicit finite element (FE) model with realistic wheel-rail profiles against the CONTACT model, which has not been sufficiently discussed, is performed by comparing the resulting shear stress, slip-adhesion area, etc., obtained from the two models. The followup studies using the verified FE model on the influence of the varying operational patterns (such as different friction, traction, etc.) on the surface and subsurface tribological responses of wheel-rail interaction are accomplished through a series of simulations. It can be concluded that the results obtained from most of the explicit FE simulations agree reasonably well with the ones from CONTACT. Also, the increase of the friction and traction can bring the stress concentrations from the subsurface upwards to the surface.

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Rail surface crack initiation analysis using multi-scale coupling approach

Cited by 3 publications

References 18 publications

Evaluation of Numerical Simulation Approaches for Simulating Train–Track Interactions and Predicting Rail Damage in Railway Switches and Crossings (S&Cs)

Evaluation of Numerical Simulation Approaches for Simulating Train–Track Interactions and Predicting Rail Damage in Railway Switches and Crossings (S&Cs)

Modelling and experimental validation of dynamic impact in 1:9 railway crossing panel

Modelling verification and influence of operational patterns on tribological behaviour of wheel-rail interaction

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