Results 21 to 30 of about 25,212 (265)
Energies, 2022 This article presents the results of analyses of energy efficiency and environmental outcomes of putting into operation high-speed trains—first of that kind in Poland—in 2014 on upgraded 3 kV DC lines.
Agata Pomykala, Adam Szelag
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Rail fatigue crack propagation in high-speed wheel/rail rolling contact
Journal of Modern Transportation, 2017 To study the wheel/rail rolling contact fatigue of high-speed trains, we obtain the distribution of contact forces between wheel and rail by introducing the strain-rate effect.
Xiaoyu Jiang +3 more
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Aerodynamics of railway train/tunnel system: A review of recent research
Energy and Built Environment, 2020 The coupling and complexity of railway train / tunnel system are further aggravated by increasing train speed, which produces a series of aerodynamics problems, such as aerodynamic drag, slipstream, pressure wave and micro pressure wave.
Jiqiang Niu +4 more
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Route management modeling of high-speed trains on the train dispatcher section [PDF]
E3S Web of Conferences, 2023 This article gives a brief overview on fragmentation and how to prepare for a high-speed train. Currently, on the sections where high-speed trains run, the train dispatcher uses his experience and high skills to solve this problem by preparing train ...
Muhiddinov Obid, Boltayev Sunnatillo
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High-speed trains: in microchannels? [PDF]
Journal of Fluid Mechanics, 2016 Kahkeshani et al. (J. Fluid Mech., vol. 786, 2016, R3) have studied particle ordering in suspension flow in a rectangular microchannel. Experiments and numerical simulations reveal that inertial focusing and hydrodynamic interactions result in long-lived ‘trains’ of regularly spaced particles.
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About the influence of wheel-rail adhesion on the maximum speed of trains
MATEC Web of Conferences, 2018 Wheel-rail adhesion is a fundamental aspect in rail transport, with high impact on traction and braking of trains. In the case of high speeds trains, wheel-rail adhesion is particularly important, as the maximum usable traction force is limited by the ...
Spiroiu Marius-Adrian
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Construction of High-Speed Tracks
Communications, 2011 The current situation and conditions of construction of high speed tracks (HST) in the Slovak Republic and the comparison with the situation abroad. The speed of train sets and the track quality for high speed trains. The dynamics of railway running. The
Stanislav Hodas
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Theory and practice for assessing structural integrity and dynamical integrity of high-speed trains [PDF]
Railway SciencesPurpose – The safety and reliability of high-speed trains rely on the structural integrity of their components and the dynamic performance of the entire vehicle system. This paper aims to define and substantiate the assessment of the structural integrity
Weihua Zhang +3 more
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AGAINTS AND FOR THE HIGH SPEED TRAINS’ MULTIMPLICATION [PDF]
Annals of the University of Oradea: Economic Science, 2008 In this exposure we intend to make visible the situation in which global warming is given by road and air transport, how could be revitalized railways, and how high speed trains could become a preferred mode of transport. But there is manifesting an opposition to railway development, nurtured by different interests, ranking from governments themselves,
Benea Ciprian, Baciu Adrian
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters +17 more
wiley +1 more source