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Some railroad settl...
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Dahlberg, ToreLinköpings universitet,Tekniska högskolan,Hållfasthetslära
(författare)
Some railroad settlement models - A critical review
- Artikel/kapitelEngelska2001
Förlag, utgivningsår, omfång ...
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2005-12-21
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SAGE Publications,2001
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:liu-47204
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-47204URI
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https://doi.org/10.1243/0954409011531585DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:vet swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
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Mathematical models to simulate railroad track settlements are reviewed and commented upon. There do not seem to be any generally accepted damage and settlement equations describing the long-term behaviour of the track. This also seems to be the case for the ballast material. Most descriptions of the settlement found in the literature are empirical, only different suggestions to describe the track settlement from a phenomenological point of view are available. The track settlement is mostly considered to be a function of number of loading cycles and/or a function of the magnitude of the loading. The settlement should also be a function of the properties of the ballast and subground materials, but very little has been found on this in the literature. By use of the finite element program LS-DYNA, a computer model (very simple) has been created to simulate the long-term behaviour of the track. The model consists of a rail, rigid sleepers, non-linear ballast springs (stiffnesses) and ballast damping. In a solid element beneath each ballast spring, track settlement can be accumulated. Settlement will occur if the stresses in that element exceed a yield limit of the element material. Also 'hanging sleepers' may be modelled and obtained as a result of the track settlement.
Ämnesord och genrebeteckningar
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Railroad ballast
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Settlement models
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Track deterioration
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Track settlement
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Train-track interaction
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TECHNOLOGY
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TEKNIKVETENSKAP
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Linköpings universitetTekniska högskolan
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit: SAGE Publications215:4, s. 289-3000954-40972041-3017
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