Combined Discrete-Continuum Analysis for Ballasted Rail Tracks

Ngo, T; Indraratna, B; Rujikiatkamjorn, C

Combined Discrete-Continuum Analysis for Ballasted Rail Tracks

Ngo, T Indraratna, B

Rujikiatkamjorn, C

Permalink

Publisher:: Springer
Publication Type:: Chapter
Citation:: Challenges and Innovations in Geomechanics, 2021, 126, pp. 266-273
Issue Date:: 2021-01-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Accepted versionAdobe PDF (1.23 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Ngo, T
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.date.accessioned	2022-04-27T08:47:39Z
dc.date.available	2022-04-27T08:47:39Z
dc.date.issued	2021-01-01
dc.identifier.citation	Challenges and Innovations in Geomechanics, 2021, 126, pp. 266-273
dc.identifier.isbn	9783030645175
dc.identifier.uri	http://hdl.handle.net/10453/156677
dc.description.abstract	A study on the load-deformation behaviour of railway ballast aggregates subjected to cyclic loadings using a combined discrete-continuum modelling approach is presented. Discrete ballast particles are simulated in the DEM and the continuum-based subgrade is simulated by the FDM. Interface elements are generated to transmit contact forces and displacements between the two domains (i.e. discrete and continuum) whereby the DEM exchanges contact forces to the FDM, and then the FDM transfers the displacement back to the DEM. Distributions of contact forces, coordination number, stress contours on the subgrade and corresponding number of broken bonds (representing ballast breakage) are analysed.
dc.language	en
dc.publisher	Springer
dc.relation	http://purl.org/au-research/grants/arc/IC170100006
dc.relation.ispartof	Challenges and Innovations in Geomechanics
dc.relation.ispartofseries	Lecture Notes in Civil Engineering
dc.relation.isbasedon	10.1007/978-3-030-64518-2_32
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Combined Discrete-Continuum Analysis for Ballasted Rail Tracks
dc.type	Chapter
utslib.citation.volume	126
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-04-27T08:47:35Z
pubs.place-of-publication	Switzerland
pubs.publication-status	Published
pubs.volume	126
dc.location	Switzerland

Abstract:

A study on the load-deformation behaviour of railway ballast aggregates subjected to cyclic loadings using a combined discrete-continuum modelling approach is presented. Discrete ballast particles are simulated in the DEM and the continuum-based subgrade is simulated by the FDM. Interface elements are generated to transmit contact forces and displacements between the two domains (i.e. discrete and continuum) whereby the DEM exchanges contact forces to the FDM, and then the FDM transfers the displacement back to the DEM. Distributions of contact forces, coordination number, stress contours on the subgrade and corresponding number of broken bonds (representing ballast breakage) are analysed.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/156677