Determination of forming limit diagrams based on ductile damage models and necking criteria
| Autor: | Hocine Chalal, Farid Abed-Meraim |
|---|---|
| Přispěvatelé: | Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Labex DAMAS, Université de Lorraine (UL) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
[PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph] Aerospace Engineering Ocean Engineering Forming limit diagram 02 engineering and technology [SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] Upper and lower bounds [SPI.MAT]Engineering Sciences [physics]/Materials [SPI]Engineering Sciences [physics] Bifurcation theory [PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph] 0203 mechanical engineering [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] General Materials Science Localized necking criteria [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Limit (mathematics) Deep drawing Mécanique: Mécanique des matériaux [Sciences de l'ingénieur] Anisotropy Civil and Structural Engineering lcsh:QC120-168.85 business.industry Mechanical Engineering Mécanique: Mécanique des solides [Sciences de l'ingénieur] GTN model Structural engineering [PHYS.MECA]Physics [physics]/Mechanics [physics] Lemaitre damage approach 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports Bifurcation analysis Mechanics of Materials Automotive Engineering Plastic anisotropy Nakazima deep drawing test lcsh:Descriptive and experimental mechanics 0210 nano-technology business lcsh:Mechanics of engineering. Applied mechanics lcsh:TA349-359 Necking |
| Zdroj: | Latin American Journal of Solids and Structures, Vol 14, Iss 10, Pp 1872-1892 HAL Latin American Journal of Solids and Structures v.14 n.10 2017 Latin American journal of solids and structures Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM Latin American Journal of Solids and Structures, Volume: 14, Issue: 10, Pages: 1872-1892, Published: OCT 2017 Latin American Journal of Solids and Structures Latin American Journal of Solids and Structures, Argentinean Association of Computational Mechanics, Brazilian Association of Computational Mechanics, Mexican Association of Numerical Methods in Engineering and Applied Sciences, 2017, 14 (10), pp.1872-1892. ⟨10.1590/1679-78253481⟩ |
| ISSN: | 1679-7817 1679-7825 |
| DOI: | 10.1590/1679-78253481⟩ |
| Popis: | International audience; In this paper, forming limit diagrams (FLDs) for an aluminum alloy are predicted through numerical simulations using various localized necking criteria. A comparative study is conducted for the FLDs determined by using the Lemaitre damage approach and those obtained with the modified Gurson–Tvergaard–Needleman (GTN) damage model. To this end, both damage models coupled with elasto-plasticity and accounting for plastic anisotropy have been implemented into the ABAQUS/Explicit software, through the user-defined subroutine VUMAT, within the framework of large plastic strains and a fully three-dimensional formulation. The resulting constitutive frameworks are then combined with four localized necking criteria to predict the limit strains for an AA6016-T4 aluminum alloy. Three of these necking criteria are based on finite element (FE) simulations of the Nakazima deep drawing test with various specimen geometries, while the fourth criterion is based on bifurcation theory. The simulation results reveal that the limit strains predicted by local criteria, which are based on FE simulations of the Nakazima test, are in good agreement with the experiments for a number of strain paths, while those obtained with the bifurcation analysis provide an upper bound to the experimental FLD. |
| Databáze: | OpenAIRE |
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