Results 1 to 10 of about 9,930 (290)
Research on characterization methods for track irregularities
Railway Engineering ScienceThe characterization of track irregularities is crucial in railway dynamics, as track irregularities are the primary source of internal excitation in railway systems.
Lifeng Xin +5 more
doaj +3 more sources
Applied Sciences (Switzerland), 2022 Irregularities of the track are a main cause of train-induced ground vibration, and track maintenance is of great importance. Although geometric irregularities at the wheel-rail contact are widely used, other types of irregularities, such as stiffness ...
Lutz Auersch, Auersch Lutz
exaly +4 more sources
Quantitative Detection of Vertical Track Irregularities under Non-Stationary Conditions with Variable Vehicle Speed [PDF]
SensorsTrack irregularities directly affect the quality and safety of railway vehicle operations. Quantitative detection and real-time monitoring of track irregularities are of great importance.
Qiushi Wang +4 more
doaj +3 more sources
Experimental study on track irregularity of straddle-type monorail [PDF]
Scientific ReportsAs straddle-type monorail systems evolve toward higher operational speeds, steeper gradients, and more diverse structural configurations, the design of guideway beams has become increasingly complex.
Zengchuang Zhao, Pingbo Wu, Lihui Ren
doaj +5 more sources
An alternative procedure to measure railroad track irregularities. Application to a scaled track
Measurement: Journal of the International Measurement Confederation, 2019 In this paper an alternative procedure to accurately measure static railroad track irregularities is proposed and applied to a scaled railroad track. The purpose of this work is the determination of highly-precise measured data in short track segments that needs to be used as input in the validation of railroad computational models that are used for on-
Javier F Aceituno +2 more
exaly +7 more sources
Identifying Parametric Models Used to Estimate Track Irregularities of a High-Speed Railway
Machines, 2022 This study aims to identify parametric models to estimate track irregularities in high-speed railways with simple acceleration measurements. The primary contribution of current research is the development of effective parametric models with smaller ...
Sunghoon Choi
doaj +2 more sources
A Review on the Development of a Track Irregularity Measurement Tool
International Journal of Islamic Education, Research and Multiculturalism, 2023 Railway transportation is one of the most vital transportation modes for people and goods. Ensuring railway transportation safety and efficiency is very important.
Febrian Angga Prasetyo, Satrio Wicaksono
doaj +2 more sources
A simplified method for determining earthquake early warning thresholds in high speed railways [PDF]
Scientific ReportsThis study conducts an exploration of determining the earthquake early warning thresholds for high-speed railways. Through shaking table tests and the analysis of two-dimensional and three-dimensional numerical models, an innovative approach to deriving ...
Hao Li, Hongru Zhang, Hua Pan
doaj +2 more sources
Advanced Stochastic Modeling of Railway Track Irregularities
Advances in Mechanical Engineering, 2013 As an important interference source of railway vibration, track irregularity is studied in this paper. It is presented that irregularities in the vertical profile and alignment can be modeled as a Gaussian random process. The power spectral density (PSD)
Mengyi Zhu +4 more
doaj +2 more sources
Stochastic Modelling of Track Irregularities [PDF]
Civil-Comp Proceedings, 2011 This paper presents a methodology to build representative railway track geometries thanks to a stochastic modelling. This modelling, which has to integrate the statistical and spatial variabilities and dependencies, is a key issue when using simulation for conception, maintenance or certification purposes, as the dynamic behaviour of the trains is ...
Perrin, G. +3 more
openaire +1 more source