Type

Journal Article

Authors

Cathal Bowe
Eugene J. O'Brien
Daniel Cantero
Paraic Quirke

Subjects

Engineering

Topics
dynamic model cross entropy drive by numerical simulations track railway vehicle track interaction stiffness

Drive-by detection of railway track stiffness variation using in-service vehicles (2017)

Abstract Railway track stiffness is an important track property which can help with the identification of maintenance related problems. Railway track stiffness can currently be measured using stationary equipment or specialised low-speed vehicles. The concept of using trains in regular service to measure track stiffness, has the potential to provide inexpensive daily 'drive-by' track monitoring to complement data collected by less-frequent monitoring techniques. A method is proposed in this paper for the detection of track stiffness variation through an analysis of vehicle accelerations resulting from the vehicle-track dynamic interaction (VTI). The Cross Entropy optimisation technique is applied to determine the track stiffness profile that generates a vehicle response that best fits the measured vertical accelerations of a railway carriage bogie. Numerical validation of the concept is achieved by using a 2-dimensional half-bogie dynamic model, representing a railway vehicle, to infer a global track stiffness profile along a track. The Track Stiffness Measurement Algorithm (TSMA) is implemented in Matlab. This paper reports the results of the numerical simulations. The proposed method gives good estimates of the track stiffness. To the authors' knowledge this is the first time an optimisation technique has been applied to the determination of railway track stiffness.
Collections Ireland -> University College Dublin -> Civil Engineering Research Collection

Full list of authors on original publication

Cathal Bowe, Eugene J. O'Brien, Daniel Cantero, Paraic Quirke

Experts in our system

1
Cathal Bowe
University College Dublin
Total Publications: 6
 
2
Eugene J. O'Brien
University College Dublin
Total Publications: 192
 
3
Daniel Cantero
University College Dublin
Total Publications: 23
 
4
Paraic Quirke
University College Dublin
Total Publications: 5