Random vibration analysis procedure of railway vehicle

Liu, Xiaoxue; Zhang, Yahui; Guo, Hanfei; He, Wang; Xie, Suchao; Zhang, Youwei

doi:10.1080/00423114.2019.1656813

Cited by 14 publications

(12 citation statements)

References 14 publications

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“…According to the random fatigue method for analysing the railway vehicle structure proposed in Liu et al, 26 the root-mean-square (RMS) value of the stress of all nodes of the wheelset is calculated. A cloud diagram is drawn, as shown in Figure 1.…”

Section: The Modified Methodsmentioning

confidence: 99%

“…Zhang, 25 Liu et al, 26 Xiaoxue, 27 and Guo 28 studied the random vibration and structural fatigue in a railway vehicle system using the combined pseudo-excitation method (PEM) and finite element method to determine the vibration, stress and other responses of the main structure of a railway vehicle system under random excitation. This method is feasible for determining the fatigue of frames, car bodies and other structures, and rotating parts such as wheelsets.…”

Section: Introductionmentioning

confidence: 99%

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An analysis method for fatigue life of rail vehicle axles considering rotation effect of wheelset

Guo

Liu

2022

Advances in Mechanical Engineering

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In this paper, the discrepancy between the calculated and actual fatigue life distribution trend of the axles of railway vehicle structures is corrected. The calculations were made using the traditional fixed-axle model in which the wheelset rotation is neglected in random vibration analysis. A correction method is proposed, which is based on the original methods of fatigue life analysis of the axle structure of railway vehicles (i.e. the pseudo-excitation method and finite element model) and according to the characteristics of the symmetrical axle structure and the actual rotational operation state of the railway vehicle wheelset. Taking a locomotive system as an example, the minimum fatigue life calculated by the fixed-axle model is only 0.81 million km. In contrast, the minimum fatigue life calculated by the proposed method is 5.85 million km, which is consistent with the actual fatigue life of the axle. The position of the minimum fatigue life is also consistent with the actual position. The reliability of the proposed method for calculating the random fatigue life of the axle structure is illustrated. The influence and contribution of the prestress generated by axle press-fitting and vehicle serving weight of the railway vehicle acting on the axle on the axle fatigue life were studied. The results show that the prestress has a different influence on the fatigue life reduction of the wheelset. The minimum fatigue life reduction can reach 16.68% when all the prestresses are considered. Therefore, the influence of prestress should be considered in the design of railway vehicle axle structures. The idea of considering prestress should be proposed when revising axle standards.

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Section: The Modified Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An analysis method for fatigue life of rail vehicle axles considering rotation effect of wheelset

Guo

Liu

2022

Advances in Mechanical Engineering

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“…An artificial Neural Network (ANN) modelling was used to predict Root Mean Square (RMS) of velocity. Liu et al [32]. developed random analysis procedure to predict the structural response of railway vehicle.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Costs of vibration and noise control are usually very high, e.g., the yearly costs of warranty for brake was about 1 Billion U.S. $. during the year 2005 [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. So it is necessary to focus on NVH aspects of combustion engines.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Transducer Location for Novel Non-Intrusive Methodologies of Diagnosis in Diesel Engines

Narayan¹,

Kaisan²,

Abubakar³

et al. 2021

Sound&Vibration

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The health monitoring has been studied to ensure integrity of design of engine structure by detection, quantification, and prediction of damages. Early detection of faults may allow the downtime of maintenance to be rescheduled, thus preventing sudden shutdown of machines. In cylinder pressure developed, vibrations and noise emissions data provide a rich source of information about condition of engines. Monitoring of vibrations and noise emissions are novel non-intrusive methodologies for which positioning of various transducers are important issue. The presented work shows applicability of these diagnosis methodologies adopted in case of diesel engines. The effects of changing various fuel injection parameters was analyzed. Scope of using non-intrusive technique has been analyzed by changing locations of microphone. Novelty of this worklies in exploring signal processing methods for various locations around the engine test set up. Various frequency ranges of contributing noise and vibration sources were identified. Time-Frequency analysis showed the onset of various cyclic. Based on the identification of various frequency bands, it is possible to device suitable filters in order to extract more information.

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“…In this paper, we present an investigation into the influence of car body flexibility on the evaluation of the failure of the car body based on the railway vehicles random analysis procedure (RVRAP) (Liu et al , 2019). Following the analysis process, a 3D FE model of the car body is established using the FE package firstly, the mode analysis is applied to obtain the elastic eigenmodes of the car body.…”

Section: Introductionmentioning

confidence: 99%

Fatigue failure analysis of express freight sliding side covered wagon based on the rigid-flexibility model

Liu

Zhang

Xie

et al. 2019

IJSI

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PurposeThe car body stiffness of express freight sliding side covered wagon decreased for the sliding and the resonance vibration based on the flexible car body has affected the dynamics performances. Dynamic loading will cause fatigue cracks and eventually lead to fatigue failure of the car body. This paper aims to investigate the influence of car body flexibility on the evaluation of the failure.Design/methodology/approachIn this paper, the railway vehicles random analysis procedure (RVRAP) is employed to study the fatigue failure of the rigid-flexibility model. Following the analysis process, the rigid-flexibility model is established and four contrastive schemes for simulation analysis are designed. To verify the results, an experimental test using the real car body structure on the vibration test plant is carried out; the RMS of dynamic stress is obtained and compared with the simulation results.FindingsThe results show that the flexibility of the car body has a crucial influence on the fatigue life.Originality/valueThe reliability is verified regarding the use of RVRAP at an appropriate stage on the antifatigue design of the vehicle.

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Random vibration analysis procedure of railway vehicle

Cited by 14 publications

References 14 publications

An analysis method for fatigue life of rail vehicle axles considering rotation effect of wheelset

An analysis method for fatigue life of rail vehicle axles considering rotation effect of wheelset

Optimization of Transducer Location for Novel Non-Intrusive Methodologies of Diagnosis in Diesel Engines

Fatigue failure analysis of express freight sliding side covered wagon based on the rigid-flexibility model

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