Importance of flexural mode shapes in dynamic analysis of high-speed trains traveling on bridges

Younesian, Davood; Marjani, Seyed Rahim; Esmailzadeh, Ebrahim

doi:10.1177/1077546312466882

Cited by 14 publications

(11 citation statements)

References 25 publications

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“…Based on the obtained results, it can be concluded that the presence of the air cavity results in an increasing for natural frequencies of the flexible rectangular plate. Forced vibration analysis of the system has been carried out by employing two random forces transmitted through rail and primary and secondary suspension systems [35]. Two concentrated forces are applied at the centers of bogies.…”

Section: Numerical Resultsmentioning

confidence: 99%

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Vibro-acoustic analysis of a coach platform under random excitation

Sadri

Younesian

2015

Thin-Walled Structures

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Section: Numerical Resultsmentioning

confidence: 99%

“…As it is mentioned earlier, track irregularity is an important source of excitation in rail vehicles. Different track classes have been characterized by the following power spectrum function [35]:…”

Section: Numerical Resultsmentioning

confidence: 99%

Vibro-acoustic analysis of a coach platform under random excitation

Sadri

Younesian

2015

Thin-Walled Structures

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“…It is well known that the structural flexibility of the vehicle components especially the carbody has important effects on the dynamic response and ride comfort of railway vehicles. Recently, a few papers [60][61][62][63] investigated the effects of carbody flexibility on the train-bridge interaction. In these studies, the train carriages were simplified as free Euler beams supported by bogie suspensions that introduced into the TBDIMs.…”

Section: Models Fully Consider the 3d Coupling Behaviour Between Railmentioning

confidence: 99%

Train–track–bridge dynamic interaction: a state-of-the-art review

Zhai

Han

Chen

et al. 2019

Vehicle System Dynamics

332

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Train-track-bridge dynamic interaction is a fundamental concern in the field of railway engineering, which plays an extremely important role in the optimal design of railway bridges, especially in high-speed railways and heavy-haul railways. This paper systematically presents a state-of-the-art review of train-track-bridge dynamic interaction. The evolution process of train-bridge dynamic interaction model is described briefly, from the simplest moving constant force model to the sophisticated train-track-bridge dynamic interaction model (TTBDIM). The modelling methodology of the key elements in the TTBDIM is systematically reviewed, including the train, the track, the bridge, the wheel-rail contact, the track-bridge interaction, the system excitation and the solution algorithm. The significance of detailed track modelling in the whole system is highlighted. The experimental research and filed test focusing on modelling validation, safety assessment and long-term performance investigation of the train-track-bridge system are briefly presented. The practical applications of train-track-bridge dynamic interaction theory are comprehensively discussed in terms of the system dynamic performance evaluation, the system safety assessment and train-induced environmental vibration and noise prediction. The guidance is provided on further improvement of the train-track-bridge dynamic interaction model and the challenging research topics in the future. ARTICLE HISTORY

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“…To solve this problem, the local flexible vibration of the car body needs to be taken into consideration. The flexible system considers the coupling vibration between the flexible body and the whole system in comparison to the original rigid system [11]. It makes the virtual prototype simulation more similar to the real situation.…”

Section: Establishing Simulation Modelmentioning

confidence: 99%

A New Vibration Absorber Design for Under-Chassis Device of a High-Speed Train

Sun

Zhou

Gong

et al. 2017

Shock and Vibration

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To realize the separation of vertical and lateral stiffness of the under-chassis device, a new type of vibration absorber is designed by using the negative stiffness of the disc spring in parallel with the rubber component. To solve its transmission characteristics, harmonic transfer method was used. A rigid-flexible coupling multibody dynamic model of a high-speed train with an elastic car body is established, and the vertical and lateral optimal stiffness of the under-chassis device are calculated. The Sperling index and acceleration PSD of the vehicle with the new vibration absorber and the vehicle with traditional rubber absorber are compared and analyzed. The results show that, with the new vibration absorber, vehicle's running stability and vibration of the car body are more effective than the vehicle with the traditional rubber absorber.

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Importance of flexural mode shapes in dynamic analysis of high-speed trains traveling on bridges

Cited by 14 publications

References 25 publications

Vibro-acoustic analysis of a coach platform under random excitation

Vibro-acoustic analysis of a coach platform under random excitation

Train–track–bridge dynamic interaction: a state-of-the-art review

A New Vibration Absorber Design for Under-Chassis Device of a High-Speed Train

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