Simplified Dynamic FEA Simulation for Post-Derailment Train-Behaviour Estimation through the Enhanced Input of Wheel–Ballast Friction Interactions

Lim, Jaehoon; Kong, Jung Sik

doi:10.3390/app13116499

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Work [16] is aimed at predicting the behavior of a train after derailment. The process of interaction of wheelsets with crushed stone ballast is considered.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…From our review of the literature [3][4][5][6][7][8][9][10][11][12][13][14][15][16], it was found that the available methods and studies do not make it possible to estimate the amount of energy absorbed by the sleeper according to the parameters of the tracks left by the wheel of the railroad rolling stock when it derails.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Determining the energy of impact of a railroad rolling stock wheelset when derailing over reinforced concrete sleepers using impact trace parameters

Bolzhelarskyi,

Bal,

Luchko

et al. 2023

EEJET

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The object of research is reinforced concrete sleepers that are subjected to the impact of a wheel in a railroad rolling stock. A procedure is given to theoretically estimate the energy at the impact of a wheel into a reinforced concrete sleeper when a rolling stock wheelset derails. Experimental studies of the geometric parameters of impact traces that occur on reinforced concrete sleepers, depending on the height of the center of mass of the striker above the impact site, were conducted. Based on the results of the experiments, the average geometric parameters of the impact traces were obtained. It was established that the dependence of impact traces on the height of the center of mass of the striker above the place of impact into the reinforced concrete sleeper has a non-linear distribution. Experimental studies of the effect of the location of the reinforced concrete sleeper base on the geometric parameters of impact traces were conducted. It was established that the location of the reinforced concrete sleeper on a solid base and on crushed stone ballast does not exert a significant effect on change in the geometric parameters of impact traces. The obtained experimental values are within the limits of 3σ determined for the rigid abutment of the sleeper. It was established that when testing a reinforced concrete sleeper in a crushed stone box, the amount of energy depends on the height of the striker. At a height of 0.95 m, the amount of energy absorbed by the sleeper together with the ballast was 475 J, and at a height of 1.42 m – 710 J. Analytical dependences were obtained between the length of the face of the impact trace and the amount of absorbed energy, as well as the depth along the direction of the force and the amount of absorbed energy. It was established that the length of the impact trace has an extremum, which does not allow recommending this parameter for estimating the amount of absorbed energy for energy values E<200 J. To determine the amount of energy absorbed by the sleeper, it is recommended to use the parameter of the depth of the impact trace

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“…Work [16] is aimed at predicting the behavior of a train after derailment. The process of interaction of wheelsets with crushed stone ballast is considered.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the energy of impact of a railroad rolling stock wheelset when derailing over reinforced concrete sleepers using impact trace parameters

Bolzhelarskyi,

Bal,

Luchko

et al. 2023

EEJET

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Numerical simulation of the post-derailment behaviour of a railway vehicle and its interaction with the infrastructure

Santelia,

Mazzeo,

Rosi

et al. 2024

Multibody Syst Dyn

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Train derailments may have catastrophic consequences, and therefore suitable measures should be designed and installed at specific safety-relevant sites to mitigate their effects. Mitigation measures, such as guard rails and containment walls, aim at restraining the motion of the derailed vehicle using suitable derailment containment devices. However, the design and structural sizing of these devices is challenging as the quantification of the loads caused by the impact with the vehicle is complex.The aim of this paper is to extend previous work from the same authors aimed at defining a non-linear multi-body model for the simulation in time-domain of the post-derailment behaviour of a railway vehicle and the impact on a derailment containment wall. The extension presented in this paper is concerned with the model of the interaction of the derailed vehicle with the sleepers and with the ballast. To this aim, an algorithm is introduced to manage the different possible contact conditions the wheels of the vehicle may undergo during the derailment process: contact with the rail, with the sleepers and with the ballast. Then, a model of the impact between the derailed wheels and the sleepers is introduced, and a terramechanic model defining the forces acting on the wheels sinking in the ballast is established. The effect of the accurate modelling of forces exchanged by the derailed wheels with the sleepers and the ballast is quantified for a relevant derailment scenario and shown to be highly relevant to the estimation of the impact loads applied to the containment structure.

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A multibody non-linear model of the post-derailment dynamics of a railway vehicle

Santelia,

Mazzeo,

Di Gialleonardo

et al. 2023

Vehicle System Dynamics

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Simplified Dynamic FEA Simulation for Post-Derailment Train-Behaviour Estimation through the Enhanced Input of Wheel–Ballast Friction Interactions

Cited by 4 publications

References 19 publications

Determining the energy of impact of a railroad rolling stock wheelset when derailing over reinforced concrete sleepers using impact trace parameters

Determining the energy of impact of a railroad rolling stock wheelset when derailing over reinforced concrete sleepers using impact trace parameters

Numerical simulation of the post-derailment behaviour of a railway vehicle and its interaction with the infrastructure

A multibody non-linear model of the post-derailment dynamics of a railway vehicle

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