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Titre du document / Document title

Modelling the hot plane strain compression test. Part 1 - Effect of specimen geometry, strain rate, and friction on deformation

Auteur(s) / Author(s)

MIRZA M. S. (1) ; SELLARS C. M. (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, ROYAUME-UNI
(2) Institute of Microstructural and Mechanical Process Engineering: The University of Sheffield (IMMPETUS), Sheffield S1 3JD, ROYAUME-UNI

Résumé / Abstract

Thermomechanically coupled finite element analysis of the hot plane strain compression test has been carried out to investigate the effect of various test parameters on the measured response and deformation of specimens. The results are presented in a series of papers. In this paper (Part 1), the results of two-dimensional simulations are discussed, evaluating the effects of material type, specimen geometry, strain rate, and friction on the overall deformation behaviour. The effects of spread and friction are detailed in Part 2, and the effects of asymmetry during the test are detailed in Part 3. The present results show that the local deformation behaviour is independent of the type of material and strain rate, at least up to 50 s-1. The behaviour, however, depends strongly on friction and initial specimen geometry, with deformation becoming more uniform with decreasing initial specimen thickness, i.e. with increasing tool width w to specimen thickness h ratio. The deformation is constrained within the predicted slip line fields, and is controlled by the instantaneous geometry and not by the strain history. At low values of wlh the strain rate gradients are very high, and the raw data must be corrected for local strain rates and strains. Master curves have been produced to account for these gradients. The present results can be treated as generic, since the deformation is independent of material and the strain rate of deformation.

Revue / Journal Title

Materials science and technology    ISSN  0267-0836   CODEN MSCTEP 

Source / Source

2001, vol. 17, no9, pp. 1133-1141 (11 ref.)

Langue / Language

Anglais

Editeur / Publisher

Maney, London, ROYAUME-UNI  (1985) (Revue)

Mots-clés anglais / English Keywords

Compression test

;

Plane strain

;

Hot deformation

;

Test bar

;

Geometrical shape

;

Strain rate

;

Friction

;

Finite element method

;

Strain distribution

;

Slip line

;

Master equation

;

Stainless steel-316L

;

Theoretical study

;

Mots-clés français / French Keywords

Essai compression

;

Déformation plane

;

Déformation à chaud

;

Eprouvette essai

;

Forme géométrique

;

Vitesse déformation

;

Frottement

;

Méthode élément fini

;

Champ déformation

;

Ligne glissement

;

Equation maîtresse

;

Acier inoxydable 316L

;

Etude théorique

;

Mots-clés espagnols / Spanish Keywords

Ensayo compresión

;

Deformación plana

;

Deformación en caliente

;

Probeta ensayo

;

Forma geométrica

;

Velocidad deformación

;

Frotamiento

;

Método elemento finito

;

Campo deformación

;

Línea deslizamiento

;

Ecuación maestra

;

Estudio teórico

;

Localisation / Location

INIST-CNRS, Cote INIST : 20742, 35400009619595.0170

Nº notice refdoc (ud4) : 1112803



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