Effect of train carbody’s parameters on vertical bending stiffness performance

Yang, Guangwu; Wang, Changke; Xiang, Futeng; Xiao, Shoune

doi:10.3901/cjme.2016.0809.090

Cited by 13 publications

(8 citation statements)

References 1 publication

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“…The lighter the vehicle carbody, the higher its flexibility that will thus facilitate an easy excitation of the carbody structural vibrations that have a negative effect upon the ride comfort. Similarly, the structural vibration leads to carbody fatigue which affects the dynamic performances and the service life of the vehicle [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical study on the influence of suspended equipments on the ride comfort in high speed railway vehicles

Dumitriu

2019

Scientia Iranica

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To study how the suspended equipments impact the carbody flexible vibrations in a high speed railway vehicle and the ride comfort, a rigid flexible general model of such vehicle is required. The numerical simulations rely on three distinct models, derived from the general model of the vehicle, namely a reference model with no equipment, a simplified model with one equipment mounted at the carbody centre and another model considering four equipments mounted in various positions along the carbody. The intent of this paper arises from the observation that the literature review does not feature any study to highlight the change in the ride comfort, exclusively due to the equipments. Similarly, there is no mention on contrasting the ride comfort results obtained from the simplified model versus the ones coming from the model with more equipments.The characteristics of the carbody flexible vibration due to the suspended equipments are made visible by comparing the frequency response functions between the no equipment and the one equipment models. The influence of the suspended equipments on the ride comfort is established by a contrastive examination of the ride comfort index calculated with one/four equipment models with the same index from the no equipment model.

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Section: Introductionmentioning

confidence: 99%

Numerical study on the influence of suspended equipments on the ride comfort in high speed railway vehicles

Dumitriu

2019

Scientia Iranica

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“…Several structural optimization analysis methods have been applied for structure vibration control, for example, a structural parameter adjustment method (Ivanov et al, 2017), an optimization method based on genetic algorithm-back propagation neural networks (Peng, 2017), a single degree of freedom model with equivalent parameters (Lee and Lin, 2017), and the establishment of a dynamic vibration-absorbing structure (Qin et al, 2018). In addition, structural modal analysis for the identification of modal parameters (Salehi et al, 2018) and the finite-element analysis method (Yang, et al, 2016;Jia et al, 2017) have been used to estimate the natural frequency and parameter adjustment of the structure and have been shown to be useful for abnormal vibration control of the steering system structure. Ç ankaya et al (2016) have performed finite-element analysis of a steering system and have proposed structural parameter combination adjustment and parameter adjustment to reduce vibrations.…”

Section: Introductionmentioning

confidence: 99%

Vibration control analysis of vehicle steering system based on combination of finite-element analysis and modal testing

Tang

Ye³

et al. 2019

Journal of Vibration and Control

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Determining the natural frequency distribution is of great importance in studying the vibration of the steering system in a commercial vehicle. A high-speed vibration frequency sweep experiment on an unladen commercial vehicle was conducted to determine the resonance frequency of the vehicle components. A vibration waterfall plot of the collected vibration data revealed that the cause of the vibration was frequency coupling resonance between the steering wheel vibration frequency and the second-order rotation frequency of the tire. Thus, a combined optimization of the structure of the rigid bearing parts of the steering fixed support and the steering column structure was proposed. A combination of finite-element analysis and modal testing method was undertaken to verify the effectiveness of the proposed combined structural improvement; the results demonstrated the consistency of the combined methods and showed that the natural frequency of the improved steering structures, together with the vibration amplitude, had changed. This study demonstrated the feasibility of the combined modal testing and finite-element analysis method, provided more information on the vibration transfer characteristics related to the vehicle subsystems, and provided a reference for the structural design of steering systems with reduced vibration.

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“…The lighter the vehicle carbody, the higher its flexibility, thus allowing an easier excitation of the carbody structural vibrations. The structural vibration leads to carbody fatigue which affects the dynamic performances and service life of the vehicle [4]. There are likewise numerous theoretical and experimental studies to validate that the level of carbody vibrations can be strongly influenced by the flexible modes of the carbody vibrations, mainly for the high speed vehicles [2, 4 -6].…”

Section: Introductionmentioning

confidence: 99%

Approaches for reducing structural vibration of the carbody railway vehicles

Dumitriu

Cruceanu

2017

MATEC Web Conf.

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Abstract.Reducing the weight of the railway vehicles stands as a decisive rule in their design, entailed by higher velocities, the need to consume less energy and lower the manufacturing costs, along with the maximization of the use of loads on the axle. Once complied with this rule, the vehicle flexibility increases and leads to an easy excitation of the structural vibrations in the carbody, with an impact upon the ride comfort in the railway vehicle. For a better ride comfort in lightweight railway vehicles, both vibration isolation approaches and structural damping approaches have been introduced. The paper herein submits a brief review of the main structural damping approaches aiming to reduce the amplitude in the carbody structural vibrations, based on the use of the piezoelectric elements in passive control schemes. The paper outcomes show the potential of the presented methods concerning the reduction of the flexible vibrations in the carbody and the ride comfort improvement.

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Effect of train carbody’s parameters on vertical bending stiffness performance

Cited by 13 publications

References 1 publication

Numerical study on the influence of suspended equipments on the ride comfort in high speed railway vehicles

Numerical study on the influence of suspended equipments on the ride comfort in high speed railway vehicles

Vibration control analysis of vehicle steering system based on combination of finite-element analysis and modal testing

Approaches for reducing structural vibration of the carbody railway vehicles

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