Identification de lois de comportement représentatives des conditions d'usinage pour des alliages de titane à différentes teneurs alpha/beta
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access URL: https://hal.science/hal-00875815
format: HTML
issued: 2026-05-09T06:58:13.226118
modified: 2026-05-09T06:58:13.207861

test_moissonnage_selune
type: Agent

Identification de lois de comportement représentatives des conditions d'usinage pour des alliages de titane à différentes teneurs alpha/beta
type: Dataset
contact point: Organization
  fn: CCSD
keyword: spimatengineering-sciences-physicsmaterials
keyword: physmecagemephysics-physicsmechanics-physicsmechanical-engineering-physicsclass-ph
keyword: infoeu-reposemanticsconferenceobject
keyword: spimecamemaengineering-sciences-physicsmechanics-physicsmed-phmechanics-of-materials-phy
keyword: physmecamsmecaphysics-physicsmechanics-physicsmaterials-and-structures-in-mechanics-physi
keyword: conference-papers
keyword: zone-de-coupe
keyword: methode-inverse
keyword: physmecamemaphysics-physicsmechanics-physicsmechanics-of-materials-physicsclass-ph
keyword: spigprocengineering-sciences-physicschemical-and-process-engineering
keyword: alliages-de-titane
keyword: spimecagemeengineering-sciences-physicsmechanics-physicsmed-phmechanical-engineering-phy
keyword: spimecamsmecaengineering-sciences-physicsmechanics-physicsmed-phmaterials-and-structures
keyword: spimecaengineering-sciences-physicsmechanics-physicsmed-ph
keyword: johnson-cook
landing page: Congrès Français de Mécanique (21; 2013; Bordeaux)
description: 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.
issued: 2026-05-09T06:58:13.222260
language: fr
modified: 2026-05-09T06:58:13.222265