A numerical and experimental investigation of a special type of floating-slab tracks

Alabbasi, Sateh; Hussein, M.F.M.; Abdeljaber, Osama; Avcı, Onur

doi:10.1016/j.engstruct.2020.110734

Cited by 23 publications

(12 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where X is the amplitude vector of the displacement. After substitution of Equations (10) and (9), one obtains…”

Section: Receptancementioning

confidence: 99%

“…In railway engineering, receptance (displacement frequency response function) or mobility (velocity frequency response function) of railway tracks have been studied both theoretically and experimentally in a detailed manner for different track systems, e.g. conventional ballasted tracks [4][5][6] and slab tracks [7][8][9][10] without considering the vehicle effects. The track receptance is normally obtained considering one wheel-rail contact point except [11] in which the cross point receptances, namely the responses of the rail under different wheelsets excited by a harmonic point load under a specific wheelset were analysed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of track flexibility and spatial coherence of track irregularity on vehicle-slab track interaction: frequency-domain analysis

Lü

2020

International Journal of Rail Transportation

View full text Add to dashboard Cite

A straightforward and practical method of frequency-domain analysis is developed for coupled vehicle-track system. The influence of the track flexibility and spatial coherence of irregularities on frequency response of vehicle-track systems are systematically studied accounting for train velocity and irregularity wavelength. Calculations show that the track flexibility cannot be ignored to obtain an accurate response of wheels whereas the resonance frequencies of car body motions remain unchanged. The inclusion of track flexibility enables consideration of wave reflections in rail sections between different wheels. The excitations at different wheels due to irregularity have phase lags determined by the train velocity and distances between wheels. This spatial coherence is important to the system response. The influence of contact spring on the system frequency response is examined. It is found that the system response converges at a certain value of the contact stiffness and the track stiffness governs the wheel-rail interaction after then.

show abstract

“…where X is the amplitude vector of the displacement. After substitution of Equations (10) and (9), one obtains…”

Section: Receptancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of track flexibility and spatial coherence of track irregularity on vehicle-slab track interaction: frequency-domain analysis

Lü

2020

International Journal of Rail Transportation

View full text Add to dashboard Cite

show abstract

“…The vibration sources of the metro concern the whole vehicle–track–foundation system. It has been found that vehicle and track damping measures, such as dampers on the wheels [ 6 ] and rails [ 7 ], elastic clips [ 8 ], ladder slabs [ 9 ] and embedded [ 10 ] and floating slab tracks with damping pads [ 11 , 12 , 13 , 14 ] and steel springs [ 15 ], etc., can have a significant impact on the vibration levels and frequency characteristics. Besides the variation of track structures, the track condition is also an important influencing factor that cannot be ignored.…”

Section: Introductionmentioning

confidence: 99%

Analogical Assessment of Train-Induced Vibration and Radiated Noise in a Proposed Theater

Liu

Xiao

Jiang

et al. 2023

Sensors

View full text Add to dashboard Cite

This study presents the analogical assessment of the train-induced vibration and radiated noise in a proposed theater. The theater is to be constructed in a region with crowded metro lines, and the assessment is implemented in an analogical building with comparable structural type and metro condition. Prior to the assessment, the comparability of the analogical building with the theater is validated using the train-induced ground vibration. With the same horizontal distance from the metro line, the train-induced vibration level in the analogical building is 9 dB higher than that in the construction site of the theater. Such results indicate that the lack of soil layers may lead to a dramatic increase in train-induced vibration in the building. In the staircase of the analogical building, the train-induced radiated noise reached 55 dB (A), which is 10 dB (A) higher than the daytime allowable level. As the most important indicator, the noise rating number in the cinema of the analogical building is NR-43, which put forward an enormous challenge on the construction of the theater with a denoise demand of 23 dB. The analogical method applied in this study provides an effective and practical way for the assessment of train-induced vibration and radiated noise in proposed vibration-sensitive buildings. The assessment results that provide necessary reference and support for the anti-vibration design will help guarantee the stage effect of the theater.

show abstract

“…While the condition assessment and health monitoring of rotating machinery have been an area of substantial research over a number of decades, there has been relatively more focus on early detection of damage with real-time methodologies. Vibration-based defect/anomaly detection utilizing acceleration data, as in many other applications [10][11][12][13][14][15][16], has been found to be an effective way to detect, locate, and quantify defects in rotating machinery. In addition to the existing model-based methods (involving classical physics) and data-driven methods [17][18][19][20][21] (involving feature extraction and classification) available in the literature, machine learning-based methods have been recently in use for bearing defect detection.…”

Section: Introduction and Overview Of One-dimensional Cnnsmentioning

confidence: 99%

One-Dimensional Convolutional Neural Networks for Real-Time Damage Detection of Rotating Machinery

Avcı

Abdeljaber

Kıranyaz

et al. 2021

Conference Proceedings of the Society for Experimental Mechanics Series

Self Cite

View full text Add to dashboard Cite

This paper presents a novel real-time rotating machinery damage monitoring system. The system detects, quantifies, and localizes damage in ball bearings in a fast and accurate way using one-dimensional convolutional neural networks (1D-CNNs). The proposed method has been validated with experimental work not only for single damage but also for multiple damage cases introduced onto ball bearings in laboratory environment. The two 1D-CNNs (one set for the interior bearing ring and another set for the exterior bearing ring) were trained and tested under the same conditions for torque and speed. It is observed that the proposed system showed excellent performance even with the severe additive noise. The proposed method can be implemented in practical use for online defect detection, monitoring, and condition assessment of ball bearings and other rotatory machine elements.

show abstract

A numerical and experimental investigation of a special type of floating-slab tracks

Cited by 23 publications

References 52 publications

Influence of track flexibility and spatial coherence of track irregularity on vehicle-slab track interaction: frequency-domain analysis

Influence of track flexibility and spatial coherence of track irregularity on vehicle-slab track interaction: frequency-domain analysis

Analogical Assessment of Train-Induced Vibration and Radiated Noise in a Proposed Theater

One-Dimensional Convolutional Neural Networks for Real-Time Damage Detection of Rotating Machinery

Contact Info

Product

Resources

About