Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database
dc.contributor.author
hal.structure.identifier | GUPTA, Akash
|
dc.contributor.author | BEN BETTAIEB, Mohamed |
dc.contributor.author
hal.structure.identifier | KALIDINDI, Surya
|
dc.contributor.author
hal.structure.identifier | ABED-MERAIM, Farid
|
dc.date.accessioned | 2018 |
dc.date.available | 2018 |
dc.date.issued | 2018 |
dc.date.submitted | 2018 |
dc.identifier.issn | 0749-6419 |
dc.identifier.uri | http://hdl.handle.net/10985/13136 |
dc.description.abstract | The present investigation focuses on the development of a fast and robust numerical tool for the prediction of the forming limit diagrams (FLDs) for thin polycrystalline metal sheets using a Taylor-type (full constraints) crystal plasticity model. The incipience of localized necking is numerically determined by the well-known Marciniak–Kuczynski model. The crystal plasticity constitutive equations, on which these computations are based, are known to be highly nonlinear, thus involving computationally very expensive solutions. This presents a major impediment to the wider adoption of crystal plasticity theories in the computation of FLDs. In this work, this limitation is addressed by using a recently developed spectral database approach based on discrete Fourier transforms (DFTs). Significant improvements were made to the prior approach and a new database was created to address this challenge successfully. These extensions are detailed in the present paper. It is shown that the use of the database allows a significant reduction in the computational cost involved in crystal plasticity based FLD predictions (a reduction of about 96% in terms of CPU time). |
dc.language.iso | en |
dc.publisher | Elsevier |
dc.rights | Post-print |
dc.subject | Crystal plasticity |
dc.subject | Viscoplastic material |
dc.subject | Numerical algorithms |
dc.subject | Localized necking |
dc.subject | Spectral method |
dc.title | Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database |
dc.identifier.doi | 10.1016/j.ijplas.2018.01.007 |
dc.typdoc | Article dans une revue avec comité de lecture |
dc.localisation | Centre de Metz |
dc.subject.hal | Sciences de l'ingénieur: Matériaux |
dc.subject.hal | Sciences de l'ingénieur: Mécanique |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des matériaux |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des solides |
ensam.audience | Internationale |
ensam.page | 168-187 |
ensam.journal | International Journal of Plasticity |
ensam.volume | 103 |
ensam.peerReviewing | Oui |
hal.identifier | hal-01794474 |
hal.version | 1 |
hal.status | accept |