Efficient 3d finite element modeling of cyclic elasto-plastic rolling contact

Meyer, Knut Andreas; Skrypnyk, Rostyslav; Pletz, Martin

doi:10.1016/j.triboint.2021.107053

Cited by 12 publications

(7 citation statements)

References 15 publications

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“…The simulation is based on an open-source plugin referred to as "Abaqus Rollover Simulation," which has been developed by Meyer et al 18 and is already established in the commercial FE software Abaqus (2020, Dassault Systèmes, France). With this tool, a cyclic wheel-rail simulation with typical contact conditions can be easily set up.…”

Section: Finite Element Analysis (Fea)mentioning

confidence: 99%

Investigation of probable squat growth from initial surface cracks in rails using a three-dimensional rollover simulation

Gschwandl

Antretter

Künstner

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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Squats are rather complex failure mechanisms in rails and challenge railway operators all over the world, thus calling for a detailed investigation of squats by means of finite element analysis to locate the initiation and propagating mechanisms. In this work, a cyclic three-dimensional (3D) finite element model of a wheel-rail contact including an initial penny-shaped defect is used. This work presents the implementation of the starting penny-shaped crack in the rail for a wheel-rail simulation by utilising a submodel strategy. Moreover, viable evaluation options are shown. In the future, this set-up will help to assess multiple crack positions and possible squat growth mechanisms.

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Section: Finite Element Analysis (Fea)mentioning

confidence: 99%

Investigation of probable squat growth from initial surface cracks in rails using a three-dimensional rollover simulation

Gschwandl

Antretter

Künstner

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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show abstract

“…For a detailed investigation and a possible future prediction of shear deformation in rails without the need for a full-scale test rig experiment, an FE simulation methodology was developed. The open source plugin 'Abaqus Rollover Simulation' for the commercial FE software Abaqus (2020, Dassault Systèmes, France), developed and published by [27], serves as the basis for the rollover model. This tool allows the user to quickly set up cyclic wheel-rail simulations by first specifying the required rail and wheel geometry.…”

Section: Finite Element Analysis (Fea)mentioning

confidence: 99%

Experimental and Numerical Visualisation of Subsurface Rail Deformation in a Full-Scale Wheel–Rail Test Rig

Gschwandl,

Weniger,

Antretter

et al. 2023

Metals

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To tackle the problem of various types of rail damage, such as rolling contact fatigue (RCF) or wear, a profound knowledge of the occurring mechanisms is necessary. This paper presents a newly developed full-scale test rig experiment that involves inserting softer pins into the rail head. These tests help deepen our understanding of shear deformation in rail steels. Furthermore, a finite element (FE) simulation approach is introduced that can be related to the test rig experiments. With these experiments, in combination with the FE simulation, valuable information regarding the plastic deformation can be obtained. This methodology allows predictions regarding a rail’s material behaviour during cyclic wheel loading. Moreover, it enables an effective and rapid qualitative material assessment, reducing the costs of expensive and time-consuming experiments.

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“…When a rolling contact fatigue test machine with different diameters of rail and wheel specimens is used in RCF tests, the cyclic plastic behavior of the investigated materials plays a significant role, especially under high contact pressures. Various effects of actual wheel/rail contact can also be studied analytically and numerically [31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Two Contributions to Rolling Contact Fatigue Testing Considering Different Diameters of Rail and Wheel Discs

Šmach,

Halama,

Marek

et al. 2023

Lubricants

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Scaled rolling contact fatigue tests, used to practically simulate the wear of the wheel and rail material under laboratory conditions, are typically classified into two categories. Tests in the first category use twin-disc stands, while the second group of test rigs use two discs of different diameters considering the rail disc as the larger one. The latter setup is closer to the real situation, but problems can occur with high contact pressures and tractions. The focus of this paper is on two main contributions. Firstly, a case study based on finite element analysis is presented, allowing the optimization of the specimen geometry for high contact pressures. Accumulated plastic deformation caused by cycling is responsible for abrupt lateral deformation, which requires the use of an appropriate cyclic plasticity model in the finite element analysis. In the second part of the study, two laser profilers are used to measure the dimensions of the specimen in real time during the rolling contact fatigue test. The proposed technique allows the changes in the specimen dimensions to be characterized during the test itself, and therefore does not require the test to be interrupted. By using real-time values of the specimen’s dimensional contours, it is possible to calculate an instantaneous value of the slip ratio or the contact path width.

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Efficient 3d finite element modeling of cyclic elasto-plastic rolling contact

Cited by 12 publications

References 15 publications

Investigation of probable squat growth from initial surface cracks in rails using a three-dimensional rollover simulation

Investigation of probable squat growth from initial surface cracks in rails using a three-dimensional rollover simulation

Experimental and Numerical Visualisation of Subsurface Rail Deformation in a Full-Scale Wheel–Rail Test Rig

Two Contributions to Rolling Contact Fatigue Testing Considering Different Diameters of Rail and Wheel Discs

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