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The aim of this paper is to study the residual stresses in an UIC-60 rail and their reduction by means of roller straightening. Both experimental and numerical investigations have been carried out in the past to reveal the formation of dominant longitudinal residual stresses. However, the agreement between both investigations was not particularly good. The finite element method (FEM) has also been used to simulate one, two and three-dimensional analyses of a rail during roller straightening processes. The present model considers the longitudinal movement of a rail through the straightening machine, contact conditions between rail and rollers and kinematic hardening so as to take into account the plastic behaviour of the rail material (steel). These results were compared with the experimental investigations and good agreement was observed. In this respect, this paper presents a novel, more realistic numerical simulation by FEM for the roller straightening process. Finally, an improvement of the straightening process in order to obtain smaller residual stress in the rail section is proposed.

Titel:	Nonlinear analysis of residual stresses in a rail manufacturing process by FEM
Autor/in / Beteiligte Person:	BETEGON BIEMPICA, C ; DEL COZ DIAZ, J. J ; GARCIA NIETO, P. J ; PENUELAS SANCHEZ, I
Link:	View record from ScienceDirect (Volltext) E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Zeitschrift:	Applied mathematical modelling, Jg. 33 (2009), Heft 1, S. 34-53
Veröffentlichung:	New York, NY: Elsevier Science, 2009
Medientyp:	academicJournal
Umfang:	print, 18 ref
ISSN:	0307-904X (print)
Schlagwort:	Control theory, operational research Automatique, recherche opérationnelle Civil engineering Génie civil Mathematics Mathématiques Mechanics acoustics Mécanique et acoustique Sciences exactes et technologie Exact sciences and technology Physique Physics Domaines classiques de la physique (y compris les applications) Fundamental areas of phenomenology (including applications) Mécanique des solides Solid mechanics Mécanique des structures et des milieux continus Structural and continuum mechanics Inélasticité (thermoplasticité, viscoplasticité...) Inelasticity (thermoplasticity, viscoplasticity...) Sciences appliquees Applied sciences Metaux. Metallurgie Metals. Metallurgy Transformation de matériaux métalliques Production techniques Formage Forming Formage à la presse des métaux en feuille et en fils Press forming of metal foils and wires Acier rail Rail steel Acero raíl Schienenstahl Analyse contrainte Stress analysis Análisis tensión Spannungsanalyse Charge cyclique Cyclic load Carga cíclica Zyklische Belastung Contrainte résiduelle Residual stress Tensión residual Eigenspannung Durcissement cinématique Kinematic hardening Endurecimiento cinemático Effet non linéaire Non linear effect Efecto no lineal Etude expérimentale Experimental study Estudio experimental Experimentelle Untersuchung Inélasticité Inelasticity Inelasticidad Modélisation Modeling Modelización Méthode élément fini Finite element method Método elemento finito Finite Element Methode Processus fabrication Production process Proceso fabricación Rail Riel (vía férrea) Schiene Dressage à galets Roller straightening Enderezamiento de rodillo Cyclic plasticity Finite element simulations Rail manufacturing Residual stresses
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Department of Construction and Engineering of Production, 33204 Gijón, Spain ; Department of Mathematics, Faculty of Sciences, 33007 Oviedo, Spain Rights: Copyright 2008 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Metals. Metallurgy ; Physics: solid mechanics

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Nonlinear analysis of residual stresses in a rail manufacturing process by FEM