Geometry and stiffness optimisation for switches & crossings, and simulation of material degradation

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Fältnamn	Indikatorer	Metadata
000		04051naa a2200505 4500
001		oai:DiVA.org:kth-76116
003		SwePub
008		120206s2010 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
009		oai:research.chalmers.se:9913d54f-aed0-4daf-86e0-a71b19f1b28b
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-761162 URI
024	7	a https://doi.org/10.1243/09544097JRRT3482 DOI
024	7	a https://research.chalmers.se/publication/1249612 URI
040		a (SwePub)kthd (SwePub)cth
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Gebretsadik, Elias Kassa,d 1975-u Manchester Metropolitan University4 aut0 (Swepub:cth)elka
245	1 0	a Geometry and stiffness optimisation for switches & crossings, and simulation of material degradation
264	1	b Sage Publications,c 2010
338		a print2 rdacarrier
500		a QC 20120208
520		a A methodology for simulatingwear, rolling contact fatigue, and plastic deformation for a mixed traffic situation in switches and crossings (S&C) has been developed. The methodology includes simulation of dynamic vehicle-track interaction considering stochastic variations in input data, simulation of wheel-rail contacts accounting for non-linear material properties and plasticity, and simulation of wear and plastic deformation in the rail during the life of the S&C component. To find means of improving the switch panel design, the geometry of a designed track gauge variation in the switch panel has been represented in a parametric way. For traffic in the facing and trailing moves of the through route, an optimum solution was identified and then validated by evaluating a wide set of simulation cases (using different wheel profiles). The optimum design includes a 12 mm maximum gauge widening. Several crossing geometries were investigated to find an optimal geometric design for the crossing nose and wing rails. The MaKuDe design showed the best performance for moderately worn wheel profiles in both running directions (facing and trailing moves). In connection with reduced support stiffness (e. g. elastic rail pads), this crossing design is predicted to lead to a significant reduction of impact loads and consequently provide a high potential of life-cycle cost reduction.
650	7	a TEKNIK OCH TEKNOLOGIERx Samhällsbyggnadsteknikx Infrastrukturteknik0 (SwePub)201042 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Civil Engineeringx Infrastructure Engineering0 (SwePub)201042 hsv//eng
650	7	a TEKNIK OCH TEKNOLOGIERx Maskinteknik0 (SwePub)2032 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Mechanical Engineering0 (SwePub)2032 hsv//eng
653		a Switches and crossings
653		a track gauge
653		a track stiffness
653		a wear
653		a plastic deformation
653		a Järnvägsgruppen - Infrastruktur
653		a Järnvägsgruppen - Infrastruktur
700	1	a Nielsen, Jens,d 1963u Chalmers University of technology,Charmec,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)jeni
700	1	a Ekh, Magnus,d 1969u Chalmers University of technology,Charmec,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)mgjo
700	1	a Iwnicki, Simonu Manchester Metropolitan University,Rail Technology Unit4 aut
700	1	a Nicklisch, Dirku DB,Deutsche Bahn Ag4 aut
710	2	a Manchester Metropolitan Universityb Chalmers University of technology4 org
773	0	t Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transitd : Sage Publicationsg 224, s. 279-292q 224<279-292x 0954-4097x 2041-3017
856	4	u http://pif.sagepub.com/content/224/4/279y Sagepub
856	4	u http://dx.doi.org/10.1243/09544097JRRT348y FULLTEXT
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-76116
856	4 8	u https://doi.org/10.1243/09544097JRRT348
856	4 8	u https://research.chalmers.se/publication/124961

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Av författaren/redakt...: Gebretsadik, Eli ...; Nielsen, Jens, 1 ...; Ekh, Magnus, 196 ...; Iwnicki, Simon; Nicklisch, Dirk

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