Performance-based track geometry and the track geometry interaction map

Liu, Y; Magel, Eric

doi:10.1243/09544097jrrt225

Cited by 11 publications

(8 citation statements)

References 9 publications

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“…In [117], the concept of 'Track Geometry Interaction Map (TGIMP)' has been introduced. The combined influence of surface (longitudinal level) and alignment irregularities has been studied in simulations.…”

Section: Feature Extractionmentioning

confidence: 99%

“…In the aforementioned formulation, the strength of the lateral/vertical interaction can be adjusted by the constant m, m 1 for weak interaction, m 1 for strong interaction and 1 < m < 2 for moderate interaction (m = 2 giving a circular or elliptic contour and is equal to the combined standard deviation as shown earlier, if standard deviation is used as feature). The approach has been tested by many simulations; a validation by measured results is not given in [117].…”

Section: Feature Extractionmentioning

confidence: 99%

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Road and track irregularities: measurement, assessment and simulation

Haigermoser

Luber²,

Rauh

et al. 2015

Vehicle System Dynamics

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Road and track irregularities have an important influence on the dynamic behaviour of vehicles.Knowledge of their characteristics and magnitude is essential for the design of the vehicle but also for comparable homologation and acceptance tests as well as for the planning and management of track maintenance. Irregularities of tracks and roads are regularly measured using various measurement technologies. All have advantages and weaknesses and require several processing steps. Characterisation of irregularities is done in the distance as well as in the wavelength domain. For rail irregularities, various distance domain description methods have been proposed and are in use. Methods have been analysed and compared with regard to their processing steps. Several methods have been analysed using measured irregularity and vehicle response data. Characterisation in the wavelength domain is done in a similar way for track and road irregularities. Here, an important issue is the estimation of the power spectral densities and the approximation by analytical formulas. For rail irregularities, periodic defects also play an important role. The use of irregularities in simulations requires various processing steps if measured irregularities are used, as well as if synthetic data are utilised. This paper gives a quite complete overview of rail irregularities and points out similarities and differences to the road.

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Section: Feature Extractionmentioning

confidence: 99%

Section: Feature Extractionmentioning

confidence: 99%

Road and track irregularities: measurement, assessment and simulation

Haigermoser

Luber²,

Rauh

et al. 2015

Vehicle System Dynamics

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“…[18], a method to characterise track irregularities for performance-based track geometry (PBTG) quality called track geometry interaction map is presented. One of the issues that this method aims to deal with is the interaction effect between two parameters, lateral and vertical track irregularities, for instance, when relating track geometry quality to the vehicle response.…”

Section: Problem Outline and Motivationmentioning

confidence: 99%

Describing and assessing track geometry quality

Haigermoser

Eickhoff

Thomas

et al. 2014

Vehicle System Dynamics

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“…[8] It is also important to understand the multiplicity of vehicle responses by testing and simulation for the acceptance of running characteristics of railway vehicles. [9] longitudinal level cross level alignment wheelset vertical acceleration wheelset lateral acceleration Based on track geometric irregularities, complex multi-body software is used to estimate acceleration on the vehicle, and the literature deals with the development of so-called performance-based track geometry [10]. The vehicle-track system contains many nonlinearities, and neural networks are particularly suitable for analyzing them.…”

Section: Figure 1 System View Of Track Geometry Parameters and Wheelmentioning

confidence: 99%

Comparative Analysis of Axlebox Accelerations in Correlation with Track Geometry Irregularities

Ágh

2019

Acta Tech Jaur

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Stochastic track irregularities influence additional dynamic forces developed in the vehicle-track interaction that lead to faster deterioration of track. For economical track maintenance it is important to understand the relationship between the irregularities recorded by conventional track geometry measuring car and the resulting dynamic vehicle responses. This paper focuses on the correlation between lateral and vertical axlebox accelerations and differently processed track geometry parameters based on a real measurement run on straight track. Decolouring of chord-offset measurement results was performed and derivatives of track geometry parameters were calculated for comparison. Those track geometry parameters have been selected which provide the most accurate information about the recorded wheelset accelerations caused by track geometry irregularities, e.g. second order derivative of cross level.

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Performance-based track geometry and the track geometry interaction map

Cited by 11 publications

References 9 publications

Road and track irregularities: measurement, assessment and simulation

Road and track irregularities: measurement, assessment and simulation

Describing and assessing track geometry quality

Comparative Analysis of Axlebox Accelerations in Correlation with Track Geometry Irregularities

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