Identification de lois de comportement représentatives des conditions d’usinage pour des alliages de titane à différentes teneurs alpha/beta
dc.contributor.author
hal.structure.identifier | GERMAIN, Guénaël
|
dc.contributor.author
hal.structure.identifier | AYED, Yessine
|
dc.contributor.author
hal.structure.identifier | BRAHAM-BOUCHNAK, Tarek
|
dc.contributor.author
hal.structure.identifier | MOREL, Anne
|
dc.date.accessioned | 2013 |
dc.date.available | 2013 |
dc.date.issued | 2013 |
dc.date.submitted | 2013 |
dc.identifier.uri | http://hdl.handle.net/10985/7417 |
dc.description.abstract | Determining a material constitutive law which is representative of the extreme conditions found in the cutting zone during machining operations is a very challenging problem. In this study, dynamic shear tests, which reproduce, as faithfully as possible, these conditions in terms of strain, strain rate and temperature, have been developed using hat-shaped specimens. The objective was to identify the parameters of a Johnson-Cook material behaviour model by an inverse method for three titanium alloys: Ti6Al4V, Ti555-3 and Ti17. In order to be as representative as possible of the experimental results, the parameters of the Johnson-Cook model were not considered to be constant over the total range of the strain rate and temperature investigated. This reflects a change in the mechanisms governing the deformation. The shear zones observed in hat-shaped specimens were analysed and compared to those produced in chips during conventional machining for both materials. It is concluded that, in the Ti555-3 alloy, the proportion of alpha-phase greatly reduces in high strain-rate zones. |
dc.language.iso | fr |
dc.publisher | Congrès Français de Mécanique |
dc.rights | Post-print |
dc.subject | alliages de titane |
dc.subject | Johnson-Cook |
dc.subject | méthode inverse |
dc.subject | zone de coupe |
dc.title | Identification de lois de comportement représentatives des conditions d’usinage pour des alliages de titane à différentes teneurs alpha/beta |
dc.typdoc | Communication avec acte |
dc.localisation | Centre de Angers |
dc.subject.hal | Sciences de l'ingénieur: Génie des procédés |
dc.subject.hal | Sciences de l'ingénieur: Matériaux |
dc.subject.hal | Sciences de l'ingénieur: Mécanique |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Génie mécanique |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Matériaux et structures en mécanique |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des matériaux |
ensam.audience | Non spécifiée |
ensam.conference.title | Congrès Français de Mécanique (21; 2013; Bordeaux) |
ensam.conference.date | 2013-08-26 |
ensam.country | France |
ensam.title.proceeding | Congrès Français de Mécanique (21; 2013; Bordeaux) |
ensam.page | 1-6 |
hal.identifier | hal-00875815 |
hal.version | 1 |
hal.submission.permitted | updateMetadata |
hal.status | accept |