A new vertical dynamic model for railway vehicle with passenger-train-track coupling vibration

Yu, Yuewei; Zhao, Leilei; Zhou, Changcheng

doi:10.1177/1464419319879790

Cited by 12 publications

(9 citation statements)

References 16 publications

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“…), and these are mainly evaluated on acting forces, velocities and accelerations, as well as other quantities. They use various ways and methods of analysing and evaluating dynamical effects and running properties [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

et al. 2022

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Simulation computations represent a very effective tool for investigating operational characteristics and behaviours of vehicles without having a real product. The rail vehicles sector is typical, in that simulation computations including multibody modelling of individual vehicles (i.e., wagons) as well as entire trainsets are widely used. In the case of designing rail vehicles, running safety and ride comfort are two of the most important assessment areas. The presented work is focused on the research of the dynamical effects of a rail vehicle while running on a railway track created in a commercial multibody model. There is a lot of research focused on the investigation of dynamic performances while a rail vehicle is running on a flexible railway track. The real operation of a rail vehicle meets problems on track, where the stiffness-damping parameters of a railway track vary in transient sections (e.g., the exit of a tunnel). This work brings a contribution to research related to the assessment of the dynamic response of a rail vehicle on a chosen track section. A passenger railway vehicle is chosen as a reference multibody model. Simulation computations were performed for three different railway track models, i.e., for a rigid track model and for a flexible track model defined in two different manners. The stiffness-damping parameters of the rail vehicle are defined symmetrically in relation to the longitudinal axis of the vehicle, e.g., they are the same values for the left and right side. The centre of gravity is not located symmetrically, but it is partially shifted in the lateral direction. This can be observed in the results of wheel forces and their waveforms. There are evaluated values and waveforms of the vertical wheel forces, the lateral wheel forces and the derailment quotient. The obtained results have revealed the influence of the railway track formulation in the model on the output parameters.

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Section: Introductionmentioning

confidence: 99%

Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

et al. 2022

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“…12–14 The hunting stability of a rail vehicle was studied using wheel-rail contact, wheel conicities, and suspension characteristics. 15,16 Furthermore, the ride comfort of tilting rail cars travelling on an irregular curving track is studied by researchers. 17,18…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14] The hunting stability of a rail vehicle was studied using wheel-rail contact, wheel conicities, and suspension characteristics. 15,16 Furthermore, the ride comfort of tilting rail cars travelling on an irregular curving track is studied by researchers. 17,18 Since research on active and semi-active suspension technologies in the field of vehicle engineering continues to gain attention due to its ability to vary the suspension force as per requirement.…”

Section: Introductionmentioning

confidence: 99%

Modelling and analysis of passenger rail vehicle for the improvement of critical speed using MR damper based semi-active suspension

Singh

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part K:

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Developing economies focus to enhance train speed by introducing high speed corridors and upgrading existing rail infrastructure. Higher speed has adverse impact on vehicle stability and ride comfort. Therefore, in order to improve critical speed and ride comfort magneto-rheological (MR) based dampers are used. Here, the lateral dynamics of an Indian passenger rail vehicle is expressed with 17 degrees of freedom model and after validation, it is used to examine the effect of suspension parameters such as damping and stiffness on critical speed. Moreover, a sensitivity analysis is performed and it is found that critical speed is the most sensitive to secondary lateral damping coefficient. Therefore, these dampers are replaced with MR fluid dampers to evaluate improvement in stability and critical speed. The modified Bouc-Wen model is formulated to characterise the behaviour of the MR damper. Herein, two distinct controllers: disturbance refusal and damper force tracking control algorithms are employed to govern the entire system. Measured random track irregularities are applied as an input to simulate the system. The results reveal that the semi-active suspension improves the critical speed by 19.38 km/h (9.89%) when compared to the existing passive suspension, and significantly reduces the vibration responses of the carbody in a wide frequency spectrum at higher speeds of the train.

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“…They demonstrated experimentally and numerically that when the passengers exist on the vehicle, a large part of the peak value of acceleration PSD is canceled; therefore, they concluded that the passengers act as damper elements. Yu et al (2020) 25 proposed a comprehensive model that included passengers, vehicles, and track models to investigate the vertical vibrations of the passengers. Such works proposed different passenger body-seat dynamic models to consider the coupled flexural vibrations of the carbody and its passengers.…”

Section: Introductionmentioning

confidence: 99%

The effect of onboard passengers’ seating arrangement on the vertical ride comfort of a high-speed railway vehicle

Rezvani

Villamarín

Bokaeian

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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This research is concerned with the impact of onboard passengers’ seating arrangement on the carbody flexural vibrations of a high-speed railway vehicle. In this regard, the previously developed passenger body-seat models are used to consider the dynamic influence of the passengers. The carbody is modeled using the Euler–Bernoulli beam model to evaluate its flexural deformation. The frequency-domain analysis demonstrates that the carbody behaves almost like a rigid body when the vehicle is full of passengers. It is established that the passengers' presence causes a 31% enhancement of the ride quality determined based on EN 12299 standard for a fully occupied vehicle compared with an empty car. A scaled model of a ratio of 1:24.5 of the Shinkansen vehicle is constructed for validation purposes. The experimental results exhibit a similar trend as found by the simulations in terms of the impact of the passengers’ distribution on the carbody flexural vibrations.

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A new vertical dynamic model for railway vehicle with passenger-train-track coupling vibration

Cited by 12 publications

References 16 publications

Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

Modelling and analysis of passenger rail vehicle for the improvement of critical speed using MR damper based semi-active suspension

The effect of onboard passengers’ seating arrangement on the vertical ride comfort of a high-speed railway vehicle

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