A dynamic wheel–rail impact analysis of railway track under wheel flat by finite element analysis

Bian, Jian; Gu, Yuantong; Murray, Martin H.

doi:10.1080/00423114.2013.774031

Cited by 83 publications

(63 citation statements)

References 15 publications

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“…8 that the maximum equivalent plastic strain changes in a way similar to the maximum length, and the peak value of the maximum vertical impact force is 400 kN for the flat length of 80 mm. It should be noted that the second peak impact forces generated by the intact wheel dropping against the rail also increase with the flat length, this is because the drop distance and time during wheel flat impacting the rail are determined by the flat length, and the longer wheel flat length will cause the larger drop distance and the later impact occurring [13], resulting in the larger impact kinetic energy. This explanation is also validated the simulated second wheel-rail impact time, that is, the longer the flat length is, and the later the second impact occurs.…”

Section: Influence Of Train Speedmentioning

confidence: 99%

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A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model

Han

Jing

2017

J. Mod. Transport.

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A three-dimensional (3-D) wheel-rail rolling contact model with a wheel flat was built using commercial software Hypermesh, and the dynamic finite element simulation was conducted using LS-DYNA 3D/explicit code. Influences of the train speed, flat length and axle load on the vertical wheel-rail impact response were discussed, respectively. The results show that the maximum vertical wheel-rail impact force induced by the wheel flat is higher than that generated by the perfect wheel, and these two dynamic impact forces are much greater than the static axle load. Besides, the maximum von Mises equivalent stress and maximum equivalent plastic strain are observed on the wheel-rail contact surface, and both of them as well as the maximum wheel-rail impact force are sensitive to train speed, flat length and axle load.

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Section: Influence Of Train Speedmentioning

confidence: 99%

“…In the high-speed cases, the dynamic wheel-rail interaction is governed by the inertia of the wheel and rail and is strongly dependent on geometrical, material and contact nonlinearities. Consequently, the wheel-rail rolling contact finite element models [13][14][15] were developed to study the wheel-rail interaction.…”

Section: Introductionmentioning

confidence: 99%

A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model

Han

Jing

2017

J. Mod. Transport.

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“…Geometrical defects of the wheel and rail are rarely detected at the initial stages of operation; however, these faults increase over time. A number of scientists describe the contact area of the wheel-rail as a point, or define wheel geometry by an analytical function in mathematical models (Barke, Chiu 2005;Bian et al 2013;Kouroussis et al 2011;Nielsen, Abrahamsson 1992;Pieringer et al 2014;Sackfield et al 2006Sackfield et al , 2007.…”

Section: Introductionmentioning

confidence: 99%

The Dynamic Behaviour of a Wheel Flat of a Railway Vehicle and Rail Irregularities

et al. 2015

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The article examines a mathematical model for the system 'Railway Vehicle Wheel-Track' that allows examining the interaction between a wheel flat and a rail in the vertical plane. The dynamics of the railway track is described using the finite element method while that of the soil and vehicle is expressed applying discrete elements. The model is used for assessing physical and mechanical properties, the roughness of the wheel, rail surface and their geometry. The analysis of the dynamic system 'Railway Vehicle Wheel-Track' has been conducted. In accordance with the revised method, forces arising from contact between the wheel flat and the rail are possible to be determined in a more precise way. The article presents and analyses the results of a mathematical experiment on this system.

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“…In [6], accelerometersare used to measure wheel flat fault. However, the two approaches in [1,2] need mount sensors on the rail, which probably change the structure of the existed line. In [11], ituses Rayleigh wave ultrasonic pulses sent at regular intervals over a measuring railto measure wheel flat.…”

Section: Introductionmentioning

confidence: 99%

Study on wheel-flat detection method based on vehicle system acceleration measurement

Wei

2013

Proceedings of 2013 2nd International Conference on Measurement, Information and Control

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Thewheel flat fault is the most common wheel damages. It causes rapid deterioration of, both, rolling and fixed railway equipment.So, it cannot be ignored and should be detected as soon as possible after it occurs. In this paper, a wheel flat detection method is presented which is based on vehicle system acceleration measurement. A simulation model with acceleration sensors is set up using SIMPACK. The Fourier Transform is applied to analysis the data obtained from the simulation model. The effectiveness of the proposed approach is demonstrated by simulation results.

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A dynamic wheel–rail impact analysis of railway track under wheel flat by finite element analysis

Cited by 83 publications

References 15 publications

A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model

A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model

The Dynamic Behaviour of a Wheel Flat of a Railway Vehicle and Rail Irregularities

Study on wheel-flat detection method based on vehicle system acceleration measurement

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