Railhead corrugation resulting from mode-coupling instability in the presence of veering modes

Fourie, Danie; Fröhling, Robert; Heyns, P.S.

doi:10.1016/j.triboint.2020.106499

Cited by 24 publications

(6 citation statements)

References 15 publications

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“…In addition, Chen's prediction method has been validated partially [22] and the source code of the Chen's prediction method is open to researchers so that researchers can easily reproduce the prediction result [23][24][25]. Most recently, Beshbichi and Fourie applied Chen's method to study rail corrugation [26,27]. erefore, Chen's rail corrugation prediction method was used to estimate the incidence likelihood of rail corrugation in the present study.…”

Section: Prediction Methods Of Rail Corrugationmentioning

confidence: 97%

Study on a Heuristic Wheelset Structure without Rail Corrugation on Sharply Curved Tracks

Mei

Chen

Song

et al. 2021

Shock and Vibration

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Rail corrugation on low rails of sharp railway curves is still a difficult problem to solve worldwide. Nearly all low rails of the sharp railway curves incur rail corrugation. In the present study, an active method to remedy rail corrugation was studied. From the viewpoint of the frictional self-excited oscillation of a wheelset-track system causing rail corrugation, the effect of wheelset structures on rail corrugation was studied. Three frictional self-excited oscillation models of wheelset-track systems with different wheelset structures were established, which include a heuristic wheelset structure and two being used in the railway industry. The incidence trends of the self-excited oscillations of these three wheelset-track systems were studied. It was found that the wheelset structure has an important effect on rail corrugation, and that the heuristic wheelset structure can restrain or get rid of rail corrugation. With the parameter sensitivity analysis, it was found that when the friction coefficient between the wheel and rail, rail gauge, rail cant, and sleeper span changes to some extent, the heuristic wheelset structure is robust enough to prevent rail corrugation. The proposed heuristic wheelset structure can be used as a potential solution to rail corrugation on sharply curved tracks.

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Section: Prediction Methods Of Rail Corrugationmentioning

confidence: 97%

Study on a Heuristic Wheelset Structure without Rail Corrugation on Sharply Curved Tracks

Mei

Chen

Song

et al. 2021

Shock and Vibration

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“…Most rail corrugation is due to the periodic fluctuations in the wheel-rail interface (such as wheel-rail normal force and creepages), then lead to periodic fluctuations in wheel/rail wear depth and gradually accumulate into rail corrugation. There are many reasons for these periodic wheel-rail vibrations, such as resonance of the wheelset itself (Tassilly & Vincent, 1991;Vila, Baeza, Mart ınez-Casas, & Carballeria, 2014;Torstensson & Schilke, 2013;Suda, Komine, Iwasa, & Terumichi, 2002;Fourie, Frohling, & Heyns, 2020), resonance of the track itself (Jin, Wen, Wang, Zhou, & Liu, 2006;Li et al, 2016;Daniel, Horwood, Meehan, & Wheatley, 2008;Wu, 2011), wheel-rail contact resonance (Carson & Johnson, 1971), vehicle-track coupling resonance (Kurzeck, 2011; and selfexcited vibrations of the wheel-rail system (Clark, Scott, & Poole, 1988;Chen et al, 2020;Cai et al, 2020), as shown in Figure 3. Similar to the wheel polygonal wear, the rail corrugation developed by dynamic cause also follows the frequency-fixed mechanism.…”

Section: Rs 32mentioning

confidence: 99%

A critical review of wheel/rail high frequency vibration-induced vibration fatigue of railway bogie in China

Wu,

Zhang,

Cai

et al. 2024

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PurposeThis review aims to give a critical view of the wheel/rail high frequency vibration-induced vibration fatigue in railway bogie.Design/methodology/approachVibration fatigue of railway bogie arising from the wheel/rail high frequency vibration has become the main concern of railway operators. Previous reviews usually focused on the formation mechanism of wheel/rail high frequency vibration. This paper thus gives a critical review of the vibration fatigue of railway bogie owing to the short-pitch irregularities-induced high frequency vibration, including a brief introduction of short-pitch irregularities, associated high frequency vibration in railway bogie, typical vibration fatigue failure cases of railway bogie and methodologies used for the assessment of vibration fatigue and research gaps.FindingsThe results showed that the resulting excitation frequencies of short-pitch irregularity vary substantially due to different track types and formation mechanisms. The axle box-mounted components are much more vulnerable to vibration fatigue compared with other components. The wheel polygonal wear and rail corrugation-induced high frequency vibration is the main driving force of fatigue failure, and the fatigue crack usually initiates from the defect of the weld seam. Vibration spectrum for attachments of railway bogie defined in the standard underestimates the vibration level arising from the short-pitch irregularities. The current investigations on vibration fatigue mainly focus on the methods to improve the accuracy of fatigue damage assessment, and a systematical design method for vibration fatigue remains a huge gap to improve the survival probability when the rail vehicle is subjected to vibration fatigue.Originality/valueThe research can facilitate the development of a new methodology to improve the fatigue life of railway vehicles when subjected to wheel/rail high frequency vibration.

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“…Modal frequency veering may also lead to thorny problems. Research shows that unstable coupling between modes in the veering area can lead to railhead corrugation [44]. Similarly, when Nam et al [45] analyzed the causes and mechanism of a rail pad brake squeal in a railway brake system, they found that the system showed dynamic instability when frequency veering occurred in the rail pad system.…”

Section: Introductionmentioning

confidence: 98%

Frequency veering of railway vehicle systems and its mapping to vibration characteristics

Liu,

Gong,

Zhou

2023

Preprint

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Frequency veering is a phenomenon that occurs during the process of modal parameter changes, which is closely related to the response characteristics of the system. Firstly, take the system with simple DOFs as the research object, the variations of modal damping ratio and modal shape in the process of frequency veering are analyzed, and the criterion for identifying frequency veering is preliminarily proposed. Then, to explore the modal evolution of complex vehicle systems with multiple DOFs, an adaptive modal continuous tracking algorithm based on local search algorithm is proposed using the Euclidean closeness of complex modal shapes as an index. The frequency veering phenomenon is analyzed with the established vehicle system dynamics model (Model Ⅰ) and reproduced through the SIMPACK model for multi-body dynamics simulation (Model Ⅱ). The perturbation method is used to analyze the mechanism of the vehicle system eigenvectors being prone to mutations during frequency veering, and the abnormal changes of the modal shapes in the process of frequency veering are further verified. In addition, two quantitative indexes for identifying frequency veering are proposed based on the modal assurance criterion (MAC) and modal shape similarity (MSS). Finally, the mapping relationship between frequency veering and vehicle system response characteristics is explored. The results indicate that before and after frequency veering, the modal shapes interchange, and in the frequency veering zone, the damping-hopping phenomenon also occurs, resulting in a significant decrease in system stability. Corresponding to the phenomena of modal damping ratios and modal shapes, the motion morphology of the vehicle system is clearly observable, and the DOF response of the car body and bogie is obviously increased, which is also manifested in the increase of the vibration of the car body and the bogie and the deterioration of the vehicle ride quality.

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Railhead corrugation resulting from mode-coupling instability in the presence of veering modes

Cited by 24 publications

References 15 publications

Study on a Heuristic Wheelset Structure without Rail Corrugation on Sharply Curved Tracks

Study on a Heuristic Wheelset Structure without Rail Corrugation on Sharply Curved Tracks

A critical review of wheel/rail high frequency vibration-induced vibration fatigue of railway bogie in China

Frequency veering of railway vehicle systems and its mapping to vibration characteristics

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