Modelling of ground-borne vibration when the train speed approaches the critical speed

J. Y. Shih*, David J. Thompson, A. Zervos

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

184 Downloads (Pure)


When trains run on soft ground, large deflections of the track and vibration of the ground can occur when the train speed approaches the speed of Rayleigh waves in the ground. Modelling is helpful to understand and mitigate such critical velocity effects. Here, a three-dimensional time-domain model of a load moving on a track and ground has been developed with the finite element software ABAQUS. This allows nonlinear soil properties to be considered. In order to validate the approach, the vibration of the track and ground induced by a high speed train is compared with those from the site measurements carried out in the late 1990s at Ledsgård, Sweden. Due to the particularly soft soil at this site, it is necessary to adopt a nonlinear soil model due to the large deflections induced by the high-speed train. It is shown that using a linear model based on the small strain soil parameters leads to results which underestimate the displacements. Laboratory test data allow the nonlinear characteristics to be obtained. These have previously been used by various authors in an equivalent linear model. Here this approach is compared with a fully nonlinear model.

Original languageEnglish
Title of host publicationNoise and Vibration Mitigation for Rail Transportation Systems
Subtitle of host publicationProceedings of the 12th International Workshop on Railway Noise, 12-16 September 2016, Terrigal, Australia
PublisherSpringer Verlag
Number of pages12
ISBN (Electronic)978-3-319-73411-8
ISBN (Print)978-3-319-73410-1
Publication statusPublished - 20 May 2018
Event12th International Workshop on Railway Noise - Terrigal, Australia
Duration: 12 Sept 201616 Sept 2016

Publication series

NameNotes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN (Print)1612-2909


Conference12th International Workshop on Railway Noise

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes


Dive into the research topics of 'Modelling of ground-borne vibration when the train speed approaches the critical speed'. Together they form a unique fingerprint.

Cite this