Analysis of Wheel Squeal and Flanging on Curved Railway Tracks

Kim, Jae Chul; Yun, Yang; Noh, Hee-Min

doi:10.1007/s12541-019-00225-7

Cited by 12 publications

(3 citation statements)

References 10 publications

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“…Ova pojava može izazvati nezadovoljstvo putnika u vozu i onih koji žive u blizini deonice krivine koloseka. Nije ga lako smanjiti, jer nastaje čak i kada voz putuje malom brzinom [9].…”

Section: Slika 3 -Valovitost šIne I Buka Kotrljanja Koja Nastaje Kroz...unclassified

Analysis of constructive solutions of resilient wheels of light railway vehicles: Directions of development and use from the view of vibroacoustic performance

Stojanović¹,

Desnica²,

Đurđev³

et al. 2022

Tehnika

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The paper analyzes the constructive and usable characteristics of resilient wheels with rubber blocks and rubber "V" ring used on light railway vehicles in urban traffic conditions in order to reduce vibration and noise. These vibrations and noise have an impact on passenger comfort and create serious problems for buildings and residents near city transit lines. The sources of noise generated by train wheels due to their vibrations and possible ways of transmitting noise caused by wheel/rail interaction are stated. The paper examines and analyzes the results of previous research that have give contribution to a better understanding and adoption of the resilient wheel structure and rubber parameters in order to achieve the best noise and vibration reduction effects. Through the paper, it was found that resilient wheels can effectively reduce the rolling noise of wheel on the track by a value of 3[dB] and significantly reduce ground vibrations in a certain frequency range.

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“…Ova pojava može izazvati nezadovoljstvo putnika u vozu i onih koji žive u blizini deonice krivine koloseka. Nije ga lako smanjiti, jer nastaje čak i kada voz putuje malom brzinom [9].…”

Section: Slika 3 -Valovitost šIne I Buka Kotrljanja Koja Nastaje Kroz...unclassified

Analysis of constructive solutions of resilient wheels of light railway vehicles: Directions of development and use from the view of vibroacoustic performance

Stojanović¹,

Desnica²,

Đurđev³

et al. 2022

Tehnika

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show abstract

“…The wheel was set free radially (y-axis) and laterally (x-axis). Two directions of the wheel, radial (vertically), and lateral (axially), were excited by a unitary force to investigate the frequency which would experience maximum amplitudes, leading to resonance of the locomotive wheel [36]. Figure 6a shows the wheel model with the load being applied radially (Figure 7a).…”

Section: Harmonic Response Analysismentioning

confidence: 99%

“…tigate the frequency which would experience maximum amplitudes, leading to resonance of the locomotive wheel [36]. Figure 6a shows the wheel model with the load being applied radially (Figure 7a).…”

Section: Harmonic Response Analysismentioning

confidence: 99%

Design and Modeling of Viscoelastic Layers for Locomotive Wheel Damping

et al. 2021

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Rail–wheel interaction is one of the most significant and studied aspects of rail vehicle dynamics. The vibrations caused by rail–wheel interaction can become critical when the radial, lateral and longitudinal loads of the vehicle, cargo and passengers are experienced while the vehicle is in motion along winding railroad paths. This mainly causes an excessive production of vibrations that may lead to discomfort for the passengers and shortening of the life span of the vehicle’s body parts. The use of harmonic response analysis (HRA) shows that the wheel experiences high vibrational amplitudes from both radial and lateral excitation. The present study describes a numerical and experimental design procedure that allows mitigation of the locomotive wheel resonance during radial and lateral excitations through viscoelastic layers. It is proven that these high frequencies can be reduced through the proper design of damping layer mechanisms. In particular, three parametric viscoelastic damping layer arrangements were analyzed (on the web of both wheel sides, under the rim of both wheel sides and on the web and under the rim of both wheel sides). The results demonstrate that the correct design and dimensions of these viscoelastic damping layers reduce the high-amplitude resonance peaks of the wheel successfully during both radial and lateral excitation.

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Influence of Varying Operational Parameters on the Defect Detection Performance of a High-Speed Ultrasonic Rail Inspection System During Field Tests

Datta

Scalea

2023

Exp Mech

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Background Continuous monitoring is essential for detecting internal defects in rails and prevent derailment related accidents. Existing techniques do not facilitate continuous monitoring because they require specialized test cars and can only operate at speeds of up to 30 mph. Objective The objective of this study is to evaluate the performance of a high-speed rail inspection system using a non-contact ultrasonic technique with the potential of operating at train revenue speeds. Methods The technique utilizes air-coupled transducers that record the ultrasonic guided waves generated by the rail-wheel contact and does not require a controlled acoustic source of excitation. A modified version of the traditional Welch’s periodogram technique is utilized to extract the Green’s function between two points on the rail. The passively extracted Green’s function is then analysed statistically to detect structural discontinuities (e.g., defects) in the rail. Results Results from fields tests performed at the Transportation Technology Centre (TTC) in Pueblo, CO, USA, demonstrate possible test speeds as high as 80 mph. From these field tests, the performance of the system is evaluated using Receiver Operating Characteristic (ROC) curves for a range of different operational parameters including test speed, location of the sensors relative to the locomotive (source), signal-to-noise ratio (SNR) of the raw signals, SNR of the reconstructed transfer function, baseline distribution length in the statistical analysis, wheel-rail interactions, and redundancies introduced from multiple runs over the same track. Conclusions This study presents the current stage of development and performance of the passive rail inspection system with full-scale experiments under field conditions. The results indicate the potential of the system to operate at high speeds as well as possible avenues of future improvement to the system.

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Analysis of Wheel Squeal and Flanging on Curved Railway Tracks

Cited by 12 publications

References 10 publications

Analysis of constructive solutions of resilient wheels of light railway vehicles: Directions of development and use from the view of vibroacoustic performance

Analysis of constructive solutions of resilient wheels of light railway vehicles: Directions of development and use from the view of vibroacoustic performance

Design and Modeling of Viscoelastic Layers for Locomotive Wheel Damping

Influence of Varying Operational Parameters on the Defect Detection Performance of a High-Speed Ultrasonic Rail Inspection System During Field Tests

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