Méthodologie 'Image Based Inertial Impact' pour la caractérisation de la dépendance à la vitesse de déformation de l'aliage de Titane Ti6Al4V
| Autor: | Delphine Notta-Cuvier, Bertrand Langrand, Thomas Fourest, Lloyd Fletcher, Pascal Bouda, Eric Markiewicz, Fabrice Pierron |
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| Přispěvatelé: | DMAS, ONERA [Lille], ONERA, University of Southampton, Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 (LAMIH), Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Centre National de la Recherche Scientifique (CNRS)-INSA Institut National des Sciences Appliquées Hauts-de-France (INSA Hauts-De-France) |
| Rok vydání: | 2019 |
| Předmět: |
TITANIUM ALLOY
Materials science ALLIAGE DE TITANE Aerospace Engineering 02 engineering and technology Plasticity Stress (mechanics) [SPI]Engineering Sciences [physics] Acceleration VISCOPLASTICITY 0203 mechanical engineering IMPACT INERTIEL INERTIAL IMPACT TEST Sensitivity (control systems) Composite material [PHYS]Physics [physics] VIRTUAL FIELDS METHOD Viscoplasticity Strain (chemistry) FULL-FIELD MEASUREMENT MESURE DE CHAMPS Mechanical Engineering Titanium alloy METHODES DES CHAMPS VIRTUELS Strain rate 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports Mechanics of Materials 0210 nano-technology VISCOPLASTICITE |
| Zdroj: | Experimental Mechanics Experimental Mechanics, Society for Experimental Mechanics, 2019, 60 (3), pp.1-14. ⟨10.1007/s11340-019-00559-3⟩ |
| ISSN: | 1741-2765 0014-4851 |
| DOI: | 10.1007/s11340-019-00559-3 |
| Popis: | International audience; In the present work Image-Based Inertial Impact (IBII) tests are performed on Ti6Al4V material. The IBII test uses an impact on the edge of the specimen to generate a short pulse that loads the specimen. Three specimen geometries have been tested: a classic rectangular specimen, and two specimen geometries with stress concentrating geometries (i.e. a hole and notches) to enhance high levels of plastic strain. Full-field measurement of the acceleration and strain are successfully used in combination with the Virtual Fields Method (VFM) to identify the strain rate sensitivity parameter of the Johnson-Cook model. The strain/strain rate spectra covered by each specimen are analysed. Finally, the influence of the virtual field used in the identification process is discussed as well as the simultaneous identification of the Johnson-Cook model strain rate sensitivity parameter and the strain rate threshold parameter. |
| Databáze: | OpenAIRE |
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