Impact of the train-track-bridge system characteristics in the runnability of high-speed trains against crosswinds - Part I: Running safety

Montenegro, Pedro Aires; Carvalho, Hermes; Ortega, Miguel; Millanes, Francisco; Ruigómez, José María Goicolea; Zhai, Wanming; Calçada, Rui

doi:10.1016/j.jweia.2022.104974

Cited by 24 publications

(9 citation statements)

References 34 publications

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“…Again, the numerical results show a good agreement with the experimental results, with some discrepancies which may be justified by the inaccuracy of the vehicle's numerical model to reproduce the effects that arise from the flexibility of the carbody. However, as stated before, the global trend is perfectly captured by the numerical model, which reinforces once again its ability to be used in railway dynamic applications, such as the study of train running safety [17,36,37] or passenger riding comfort [18].…”

Section: Validation Resultssupporting

confidence: 67%

“…It is important to highlight that, although this example considers a rigid structure, the model proposed here is based on a FE environment (see Sect. 3), which allows the analysis of flexible structures with any degree of complexity, such as those studied in several authors' previous publications [17,38,65,66].…”

Section: Trackmentioning

confidence: 99%

“…VSI models in railways can be used in a wide range of applications, such as the study of bridge dynamics [11][12][13][14], evaluation of the train running safety [15][16][17], and assessment of passenger riding comfort [18,19], among others. Depending on the objective, the VSI models may have different degrees of sophistication.…”

Section: Introductionmentioning

confidence: 99%

“…Zhai et al [6,33,34] presented a theoretical framework of a train-track-bridge interaction tool, as well as several experiments conducted with it. Montenegro et al [35] also developed the tool "VSI-Vehicle-Structure Interaction Analysis," which can model structures with any degree of complexity and that has been used in several train-bridge applications, such as running safety [17,36,37], evaluation of the train stability depending on the track condition [38], as well as in the evaluation of riding comfort considering different indicators in different directions [18]. Recently, other research groups also developed their own VSI tools to study the train-bridge coupling behavior under different conditions [15,16,[39][40][41][42], as stated in the literature reviews published by Montenegro et al [43] and Li et al [44].…”

Section: Introductionmentioning

confidence: 99%

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Wheel–rail contact model for railway vehicle–structure interaction applications: development and validation

Montenegro

Calçada

2023

Rail. Eng. Science

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An enhancement in the wheel–rail contact model used in a nonlinear vehicle–structure interaction (VSI) methodology for railway applications is presented, in which the detection of the contact points between wheel and rail in the concave region of the thread–flange transition is implemented in a simplified way. After presenting the enhanced formulation, the model is validated with two numerical applications (namely, the Manchester Benchmarks and a hunting stability problem of a suspended wheelset), and one experimental test performed in a test rig from the Railway Technical Research Institute (RTRI) in Japan. Given its finite element (FE) nature, and contrary to most of the vehicle multibody dynamic commercial software that cannot account for the infrastructure flexibility, the proposed VSI model can be easily used in the study of train–bridge systems with any degree of complexity. The validation presented in this work proves the accuracy of the proposed model, making it a suitable tool for dealing with different railway dynamic applications, such as the study of bridge dynamics, train running safety under different scenarios (namely, earthquakes and crosswinds, among others), and passenger riding comfort.

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Section: Validation Resultssupporting

confidence: 67%

Section: Trackmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wheel–rail contact model for railway vehicle–structure interaction applications: development and validation

Montenegro

Calçada

2023

Rail. Eng. Science

Self Cite

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“…In this study, a train-trackbridge coupling vibration model as shown in Figure 1 will be adopted here to generate the real-time dynamic responses of the train, track and bridge subsystems by jointing the individual vibrations of three subsystems according to certain wheel-rail motion relationship and track-bridge action relationship. 28,29 The train is modelled as a multibody dynamics model with 35 DOFs with double spring-damping systems, including 5 DOFs for the car-body, 10 DOFs for 2 bogies and 20 DOFs for four wheelsets. 30 Through the equivalent multilayer physical model composed of mass, spring and damping, the track structure is simulated as a ballasted track.…”

Section: Definition and Calculationmentioning

confidence: 99%

Influence mechanism of vertical dynamic track irregularity on train operation stability of long-span suspension bridge

Wang

Yang

Ning

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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The track needs to maintain sufficient foundation stiffness to ensure its smoothness and meet the operation stability requirements of high-speed trains. However, the train-induced deformation of flexible suspension railway bridge will inevitably induce the obvious vertical dynamic track irregularity and threaten train operation stability. Combined with a long-span suspension bridge with a main span of 1092 m, this paper provides a new analysis framework for evaluating the track smoothness on the long-span bridge from the perspective of train operation stability. The comprehensive train-track-bridge coupling vibration analysis is conducted to highlight the impact factors on train operation stability and identify the dynamic track irregularity. The simplified evaluation framework of dynamic track irregularity are then proposed to evaluate the track smoothness. The results show that the vertical dynamic track irregularity of long-span bridges is obviously affected by action of train, random track irregularity and overall temperature load. It is quite different from the static track irregularity in terms of alignment and spatial frequency. By separating the dynamic track irregularity according to the wavelength limit of 200 m, two alignment evaluation methods are proposed, namely the mid-chord measurement within 200 m wavelength and curvature method above 200 m wavelength, to reveal the different contributions of dynamic track irregularity component to the vertical car-body acceleration. The influence mechanism of dynamic track irregularity caused by different factors on the stability of train operation is finally identified from the perspectives of vibration acceleration and centrifugal acceleration.

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Advanced Numerical Simulation of Dynamic Behavior of Railway Infrastructure Under Extreme Conditions

Zhai,

2024

Digital Innovations in Architecture, Engineering and Construction

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Impact of the train-track-bridge system characteristics in the runnability of high-speed trains against crosswinds - Part I: Running safety

Cited by 24 publications

References 34 publications

Wheel–rail contact model for railway vehicle–structure interaction applications: development and validation

Wheel–rail contact model for railway vehicle–structure interaction applications: development and validation

Influence mechanism of vertical dynamic track irregularity on train operation stability of long-span suspension bridge

Advanced Numerical Simulation of Dynamic Behavior of Railway Infrastructure Under Extreme Conditions

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