Train-Track Interaction and Mechanisms of Irregular Wear on Wheel and Rail Surfaces

Nielsen, Jens C. O.; Lundén, Roger; Johansson, Anders; Vernersson, Tore V

doi:10.1076/vesd.40.1.3.15874

Cited by 179 publications

(72 citation statements)

References 75 publications

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“…Extensive reviews of VTI models and their applications are available from references [6], [8] and [9]. They range from beam on elastic foundation and beam on discrete flexible support with a single moving load to full three-dimensional FE models of the track and its substructure.…”

Section: Overview Of Vti Models In the Wider Contextmentioning

confidence: 99%

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An investigation of sleeper voids using a flexible track model integrated with railway multi-body dynamics

Bezin

Iwnicki

Cavalletti³

et al. 2009

Proceedings of the Institution of Mechanical Engineers, Part F:

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This article describes a flexible track system model (FTSM) that represents the track structure for a typical ballasted track, taking into account the flexibility of the rails, the sleeper mass and the resilience of the pad/fastening elements, as well as the ballast support stiffness condition. The detailed track model is integrated into a commercial railway vehicle dynamics software, thus allowing for any vehicle to be simulated onto the flexible track while at the same time taking into account the detailed calculation of the non-linear wheel-rail contact interaction. As an example, the application of the FTSM to the study of hanging sleepers, with respect to the UK Railway Group Standard limits, is presented. This example shows the impact of forces because of hanging sleepers on the vehicle and on the track, and attempts at quantifying the damage made to the track components for the specific conditions simulated.

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Section: Overview Of Vti Models In the Wider Contextmentioning

confidence: 99%

“…This offers the possibility to include higher-frequency effects into the vehicle-track interaction (VTI) models, which were shown by previous researchers [4][5][6][7] to be significant contributors to the development of certain types of degradation of the track components, e.g. corrugation.…”

Section: Introductionmentioning

confidence: 99%

An investigation of sleeper voids using a flexible track model integrated with railway multi-body dynamics

Bezin

Iwnicki

Cavalletti³

et al. 2009

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Another approach [16] stems from the assumption that the removed material volume is proportional to the frictional work in the contact patch. The frictional work per metre rolled distance is calculated as a sum of products containing the tangential forces and spin moment and the corresponding creepages in the wheel-rail contact.…”

Section: Metal Pm Emission Predication Modelsmentioning

confidence: 99%

Prediction of metal PM emission in rail tracks for condition monitoring application

Tesfa¹,

Gu²,

Anyakwo³

et al. 2011

5th IET Conference on Railway Condition Monitoring and Non-Destructive Testing (RCM 2011)

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Exposure to particulate material (PM) is a major health concern in megacities across the world which use trains as a primary public transport. PM emissions caused by railway traffic have hardly been investigated in the past, due to their obviously minor influence on the atmospheric air quality compared to automotive transport. However, the electrical train releases particles mainly originate from wear of rails track, brakes, wheels and carbon contact stripe which are the main causes of cardio-pulmonary and lung cancer. In previous reports most of the researchers have focused on case studies based PM emission investigation. However, the PM emission measured in this way doesn't show separately the metal PM emission to the environment. In this study a generic PM emission model is developed using rail wheel-track wear model to quantify and characterise the metal emissions. The modelling has based on Archard's wear model. The prediction models estimated the passenger train of one set emits 6.6mg/km-train at 60m/s speed. The effects of train speed on the PM emission has been also investigated and resulted in when the train speed increase the metal PM emission decrease. Using the model the metal PM emission has been studied for the train line between Leeds and Manchester to show potential emissions produced each day. This PM emission characteristics can be used to monitor the brakes, the wheels and the rail tracks conditions in future.

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“…The work reported by Nielsen et al [13] focuses on the train-track interaction and mechanisms of irregular wear. These authors discuss the causes, consequences and suggest solutions to minimize the problems for several types of wheel and rail wear.…”

Section: Introductionmentioning

confidence: 99%

Application of a Computational Tool to Study the Influence of Worn Wheels on Railway Vehicle Dynamics

Pombo¹

2012

JSEA

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The search for fast, reliable and cost effective means of transport that presents better energy efficiency and less impact on the environment has resulted in renewed interest and rapid development in railway technology. To improve its efficiency and competitiveness, modern trains are required to travel faster, with high levels of safety and comfort and with reduced Life Cycle Costs (LCC). These increasing demands for vehicle requirements imposed by railway operators and infrastructure companies include maintaining the top operational speeds of trainsets during their life cycle, having low LCC and being track friendly. This is a key issue in vehicle design and in train operation since it has a significant impact on the safety and comfort of railway systems and on the maintenance costs of vehicles and infrastructures. The purpose of this work is to analyze how the wear progression on the wheelsets affects the dynamic behavior of railways vehicles and its interaction with the track. For this purpose a vehicle, assembled with new and worn wheels, is studied in realistic operation scenarios. The influence of the wheel profile wear on the vehicle dynamic response is assessed here based on several indicators used by the railway industry. The running stability of the railway vehicles is also emphasized in this study.

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Train-Track Interaction and Mechanisms of Irregular Wear on Wheel and Rail Surfaces

Cited by 179 publications

References 75 publications

An investigation of sleeper voids using a flexible track model integrated with railway multi-body dynamics

An investigation of sleeper voids using a flexible track model integrated with railway multi-body dynamics

Prediction of metal PM emission in rail tracks for condition monitoring application

Application of a Computational Tool to Study the Influence of Worn Wheels on Railway Vehicle Dynamics

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