Results 11 to 20 of about 580,864 (238)

A Novel Short-Range Prediction Model for Railway Track Irregularity [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2012
In recent years, with axle loads, train loads, transport volume, and travel speed constantly increasing and railway network steadily lengthening, shortcomings of current maintenance strategies are getting to be noticed from an economical and safety ...
Peng Xu   +3 more
doaj   +2 more sources

Dynamic Wheel-Rail Force-Based Track-Irregularity Evaluation for Ballasted Track on Serviced Railway by Adjacent Excavation

open access: yesApplied Sciences, 2021
This study investigates a load-based, track-irregularity-analysis technique for ballasted tracks on a serviced railway line with respect to excavation work conducted in adjacent sites.
Jung-Youl Choi   +3 more
doaj   +2 more sources

Influence Analysis of Magnetic Track Beam Irregularity on the Suspended State

open access: yes机车电传动, 2016
Through the establishment of a single magnet-suspension system-track beam interaction model, characteristic requirements of track beam was described, and state change of a single magnet in suspension was studied from track beam long-wave irregularity ...
LI Ping, HU Wenwen
doaj   +2 more sources

Full-Scale Field Experimental Investigation on the Intended Irregularity of CWR Track in Vertical Plane

open access: yesEnergies, 2021
The purpose of the following paper is to present the author’s experimental field investigations of a jointless railway track subjected to a generated imperfection and analysis of track response to applied static loads.
Włodzimierz Andrzej Bednarek
doaj   +2 more sources

Investigation of the effect of track irregularity on the damage to turnout components at high-speed type turnout

open access: yesNihon Kikai Gakkai ronbunshu
The maintenance standard values for track irregularity at high-speed type turnouts where trains pass through the main line of turnout at a speed of 120 km/h are managed with stricter values compared to general turnouts.
Katsutoshi SHIOTA   +2 more
doaj   +2 more sources

Railway Track Irregularity Estimation Using Car Body Vibration: A Data-Driven Approach for Regional Railway

open access: yesVibration
Track and preventive maintenance are necessary for the safe and comfortable operation of railways. Track displacement measured by track inspection vehicles or trolleys has been primarily used for track management.
Hitoshi Tsunashima, Nozomu Yagura
doaj   +2 more sources

Track Irregularity Time Series Analysis and Trend Forecasting

open access: yesDiscrete Dynamics in Nature and Society, 2012
The combination of linear and nonlinear methods is widely used in the prediction of time series data. This paper analyzes track irregularity time series data by using gray incidence degree models and methods of data transformation, trying to find the ...
Jia Chaolong   +3 more
doaj   +2 more sources

THE APPLICATION OF HILBERT-HUANG TRANSFORM MARGINAL SPECTRUM-MAHALANOBIS DISTANCE ON THE ANALYSIS OF TRACK IRREGULARITY

open access: yesJixie qiangdu, 2017
Extracting the information of frequency-amplitude of the track irregularity through the Hilbert-Huang Transform( HHT) spectrum,the clustering analysis is carried on the track irregularity HHT spectrum for the railways of same operating condition,then we ...
DU ZhengJun, XU Lei, HUANG Yan
doaj   +2 more sources

Random Field Modeling of Track Irregularity of Beijing-Guangzhou High-Speed Railway with Karhunen-Loève Expansion

open access: yesInternational Journal of Distributed Sensor Networks, 2015
As one of the largest civil engineering systems in China, the network of high-speed railway expanded fast in the last decade. The safety of railway operation is of great concern for the whole country.
Mengyi Zhu   +3 more
doaj   +2 more sources

Carbody sway behaviour of railway vehicles due to track irregularity from rail alternate side wear

open access: yesRailway Engineering Science
Track irregularity from rail alternate side wear is manifested as uneven rail wear waveforms alternating in the left and right rails with equal intervals, which will cause carbody sway behaviour of railway vehicles and greatly influences the passenger ...
Lai Wei   +5 more
doaj   +2 more sources

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