The Calculation of Wheel Impact Force Due to the Interaction between Vehicle and a Turnout

Sun, Yan Quan; Cole, Colin; McClanachan, Mitchell

doi:10.1243/09544097jrrt350

Cited by 31 publications

(22 citation statements)

References 10 publications

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“…At the point from the rolling surface or the leaning point the effect is insignificant; here only the sliding surface counts. IManE&E 2017 3 We can assert that there is an elongation of the shape of the contact surface for the 1:20 inclination, a fact clearly visible in both points and justified by a better guidance. This assertion is reasoned by the fact that for the wear profiles the larger half-axis of the contact surface is orientated perpendicularly on the railway.…”

Section: Numerical Applicationmentioning

confidence: 73%

“…The calculus of the penetration within the hypothesis of a single contact point. 3. Verifying the possibility of the development of a new contact area.…”

Section: Numerical Applicationmentioning

confidence: 99%

“…The UIC (International Union of Railways) and railway researchers have been accomplished several computer applications for the study of train-turnout interaction [3]. The common feature is the employment of commercial multi-body or finite element (FE) software.…”

Section: Introductionmentioning

confidence: 99%

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An analysis of the train–turnout interaction

Tudorache

Oprea

2017

MATEC Web Conf.

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Abstract.A distinctive feature of the application proposed in this work is the occurrence of simultaneous contact patches on a single wheel, i.e., the multi-point contact case. A difficulty in the study of this phenomenon is that the contact areas depend on the deformation of the bodies, whereas these deformations are functions of the contact loading and the contact area. This is contrary to what is usually the case in finite element analysis, where the load and displacement are prescribed at different (fixed) parts of the boundary.

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Section: Numerical Applicationmentioning

confidence: 73%

“…The calculus of the penetration within the hypothesis of a single contact point. 3. Verifying the possibility of the development of a new contact area.…”

Section: Numerical Applicationmentioning

confidence: 99%

See 1 more Smart Citation

An analysis of the train–turnout interaction

Tudorache

Oprea

2017

MATEC Web Conf.

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“…The large contact force will accelerate the deterioration rate of the turnout crossing. Sun et al [25] provided an insight into the potential sites for impact and fatigue damage as the train wheel traverses through the nose of the crossing. Firstly, the wing rail fatigue damage is caused by contact from the far side of wheel.…”

Section: Wheel/rail Interface (W-r)mentioning

confidence: 99%

Nonlinear Finite Element Modelling of Railway Turnout System considering Bearer/Sleeper-Ballast Interaction

Siew

Mirza

Kaewunruen

2015

Journal of Structures

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Rail turnouts are built to enable flexibility in the rail network as they allow for vehicles to switch between various tracks, therefore maximizing the utilisation of existing rail infrastructure. In general, railway turnouts are a safety-critical and expensive feature to a rail system as they suffer aggressive operational loads, in comparison to a plain rail track, and thus require frequent monitoring and maintenance. In practice, great consideration is given to the dynamic interaction between the turnouts components as a failed component may have adverse effects on the performance of neighbouring components. This paper presents a nonlinear 3D finite element (FE) model, taking into account the nonlinearities of materials, in order to evaluate the interaction and behaviour of turnout components. Using ABAQUS, the finite element model was developed to simulate standard concrete bearers with 60 kg/m rail and with a tangential turnout radius of 250 m. The turnout structure is supported by a ballast layer, which is represented by a nonlinearly deformable tensionless solid. The numerical studies firstly demonstrate the importance of load transfer mechanisms in the failure modes of the turnout components. The outcome will lead to a better design and maintenance of railway turnouts, improving public safety and operational reliability.

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“…Moreover, it is far more complex than that of ordinary track. Such conditions will ultimately lead to the transmission of noise and vibrations into the outside environment, thus significantly affecting the operating behaviour of railway vehicles in terms of motion stability, riding comfort, and derailment prevention [8,9]. Dynamic train-turnout interaction caused by complicated contact conditions of railway turnouts has been mainly studied.…”

Section: Introductionmentioning

confidence: 99%

Stiffness Characteristics of High-Speed Railway Turnout and the Effect on the Dynamic Train-Turnout Interaction

Wang

et al. 2016

Shock and Vibration

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Track stiffness in railway turnouts is variable due to differences in structural composition along the longitudinal direction, which will lead to severe dynamic interaction between train and turnout. In this paper, a transient analysis model is presented to investigate the stiffness characteristics of high-speed railway turnouts based on the finite element method and is applied to optimise the stiffness of railway turnouts. Furthermore, the effect of the stiffness variations on the dynamic train-turnout interaction is analysed. The calculation results show that the track stiffness characteristics are similar in the main and diverging line of railway turnout, except for the check rail sections. Due to the existence of shared baseplates and spacer blocks between different rails, the stiffness variations in the crossing panel are most severe in high-speed railway turnouts. The stiffness differences (calculated as the ratio of the maximum and minimum stiffness) of the longitudinal and lateral direction for Chinese number 18 ballasted turnout are 216% and 229%, respectively. The graded stiffness of the tie pads has been redesigned to optimise the stiffness of railway turnout based on the transient analysis model and the stiffness differences of the turnout are decreased. Altogether, the dynamic train-turnout interaction is enhanced remarkably by considering the turnout's stiffness characteristics.

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The Calculation of Wheel Impact Force Due to the Interaction between Vehicle and a Turnout

Cited by 31 publications

References 10 publications

An analysis of the train–turnout interaction

An analysis of the train–turnout interaction

Nonlinear Finite Element Modelling of Railway Turnout System considering Bearer/Sleeper-Ballast Interaction

Stiffness Characteristics of High-Speed Railway Turnout and the Effect on the Dynamic Train-Turnout Interaction

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